108 无人机机体结构件用什么改性尼龙
机体结构的分层次选料
无人机机体不是一种料。主承力件（机臂、中心板）走碳纤维环氧复材或碳纤增强 PA；
次承力件（电机座、云台支架、起落架）走 PA66-GF30 到 GF50；
功能件（天线罩、电池仓、线卡）走 PA66-GF20 或 PA12。
改性尼龙在无人机上的位置是次承力和功能件，主承力是复材的活。
现场还原
去年春天，一家船舶设备厂的船东投诉处理会上，工程经理摊开一张管路系统的照片，沿海航线的货船，压载水管路的接头位渗漏，锈迹顺着船体流了一米多。船东的原话是，我这条船跑中东线，四十度的舱温，你们的管子按什么温度设计的。
按常规设计，没错，但中东的机舱温度把常规设计打穿了。后来接头位的材料整体升级，渗漏的返修集中在三个月内处理完，这家厂从此把航线气候写进了报价单的第一页，材料规格跟着航线走，是他们用返修换来的认知。
机臂和电机座的核心要求
机臂承受电机推力 + 螺旋桨振动 + 落地冲击，是疲劳件。核心指标是疲劳强度和抗蠕变，不是静态拉伸强度。
PA66-GF40 在这个位置是主流——GF40 比 GF30 刚度高 25%，比 GF50 韧性好 30%，是刚度与韧性的折中点。
电机座要额外考虑电机发热——电机座温度能到 80-100℃，要加耐热稳定剂。
振动疲劳是隐形杀手
无人机螺旋桨转速高，机体长期处于高频振动。PA 的疲劳强度只有静态强度的 25%-30%，远低于金属。
设计上要做的三件事：一是在振动节点位置加筋，二是避免尖角和厚度突变，三是关键连接用金属嵌件分散应力。
很多机体断裂不是强度不够，是疲劳裂纹从尖角起裂。
耐候与吸湿的边界
无人机多在户外作业，PA66 吸湿后刚度下降 30%-40%——这是很多飞行事故的隐性原因。
湿度大的地区要考虑三条：一是走 PA66-GF40 而非 GF30，留出吸湿后的刚度余量；
二是做表面封孔处理；三是长期存放要干燥。
吸水率更低的 PA12 适合做薄壁功能件，但成本高。
轻量化要算整机账
无人机减重直接换取续航，每减 1 g 都有意义。但改性尼龙减重要算整机账：GF50 比 GF30 密度只高 0.07 g/cm³，刚度却高 35%——
在刚度受限的件上，加纤反而是减重（可以做更薄的壁）。
真正要减的是密度：矿物填充体系密度更低，适合非承载的盖板类件。
延伸判断：无人机结构件的隐性变量
有三件最容易漏掉的隐性变量。一是玻纤取向导致的各向异性——注塑件流动方向和垂直方向收缩差 0.3%-0.5%，细长机臂会翘曲，模具要做模流分析。
二是回收料绝对禁用——疲劳件加回收料，寿命下降 50% 以上。三是低温高空环境——高空 -30℃ 以下，增韧剂玻璃化转变点要低于使用温度，否则增韧失效。
深一层：几个数字的来历
船舶管路的四类工况里，压载水系统的腐蚀性最强，海水加微生物加处理药剂的组合，对材料的化学攻击是持续的。
长碳链尼龙的耐化学底子好，但海水里的氯离子对特定体系有专项攻击，耐氯验证不能省，实验室的盐水浸泡和真实海水的差别在微生物这一层，有条件的话用实海挂片补一轮。
长碳链尼龙是船用管路的主力，吸水率低带来尺寸稳定，接头位的密封不受湿度漂移影响。长碳链的低温韧性也好，北方港口的冬季作业零下十几度，管路的抗冻胀能力是隐性能。
料价高出一截，但管路的泄漏成本在船上被放大十倍，维修要靠坞修的窗口，一次坞修的钱够换全船的管路。
耐水解是水管的关键指标，热水管段和压载舱附近的高湿环境，普通尼龙的水解是慢性病，几年后脆化开裂。
耐水解等级的选型按管段位置分级，靠近热源的和长期湿位用高等级，其余按常规，分级选料省下的成本能覆盖全船材料升级的差价，这个账值得算给船东听。
抗水锤和抗冻胀是结构层面的考题，水锤的冲击压力是静压的几倍，管卡的刚性设计决定管路的受力路径，塑料管路的卡距要比金属管密。冻胀是北方船的事，管内的残水结冰膨胀，管路的最低点和弯头是冻胀开裂的高发位，排空设计和材料的低温韧性双保险。
燃油管路要过静电和渗透两关，静电的积聚在塑料管上是安全隐患，导电等级的管料配合接地设计，渗透是燃油的低分子组分穿过管壁，渗透率超标的管路机舱里全是油味。两关的验证都有专门的方法，燃油管路的料是船用塑料件里验证最重的一类。
机舱温度是选料的基准线，机舱常年四五十度，中东和赤道航线能上六十度，管路的耐温等级按最高舱温加管内介质温度的叠加取值。温度等级取低了，寿命曲线整体下移，取高了成本上去，分区域取值是精细化设计的方向，同一艘船的管路可以按区域分两档。
工程实测：4 条强制测试
测试1：疲劳强度。PA66-GF40 在 10⁷ 次循环下疲劳强度为静态强度的 28%，碳纤维复材为 55%——疲劳是 PA 的短板。
测试2：吸湿后刚度。PA66-GF30 吸湿 2.5% 后弯曲模量下降 38%，GF40 下降 32%——湿区要留余量。
测试3：GF 含量对比。GF30/GF40/GF50 弯曲模量分别为 8500/10500/13000 MPa，缺口冲击依次下降 12/9/6.5 kJ/m²。
测试4：减重账。机臂从 PA66-GF30 改 GF40，壁厚减 0.4 mm，单件减重 8 g，刚度持平。
边界声明
| 工况 | 推荐材料 |
|---|
| 机臂 / 中心板 | 碳纤复材或碳纤增强 PA |
| 电机座 / 云台支架 | PA66-GF40 + 耐热 |
| 起落架 | 增韧 PA66-GF30 |
| 天线罩 / 电池仓 | PA66-GF20 |
| 高湿地区 | PA66-GF40 或 PA12 |
工程备忘
无人机机体主承力走复材，改性尼龙占次承力和功能件——GF40 是刚度与韧性的折中点。
真正的短板是疲劳（只有静态强度的 28%）和吸湿后刚度衰减 38%，这两点必须留余量。
追问三连
问一：塑料管路在船上能替代多少金属管？海水系统的下段大口径还是金属的天下，塑料管的上段和小口径替代率高。替代的边界在防火和机械损伤风险位，规范的限制也在，按船级社的允许范围划边界，规范内替代。
问二：管路连接用什么方式？热熔对接和法兰连接为主，热熔的可靠性依赖工艺参数，法兰连接的可拆卸性好。船上的维修条件差，法兰位留够，热熔位一次做对，两种方式的分布按维修预案设计，维修预案是管路设计的一部分。
问三：船级社认证麻烦吗？材料的船级认证周期以年计，但认证过了就是长期资质，船级社的证书是船用材料的通行证。认证的测试项目和常规验证重叠度高，提前把重叠项一次做完，认证的增量成本可控，这笔投入对做船用的厂是必选项。
反向案例与收尾判断
某厂给一艘内河船配了海用规格的管路，材料等级超配，成本上去，船东接受，但交付后机舱的安装反馈是管子偏硬，弯管工序的废品率上升。海用料的刚度高，内河船的管径小弯头多，加工性成了新问题。
这个案例的启示是材料等级不是越高越好，规格要贴着工况走，超配的钱花出去买的是不需要的指标，弯头的废品率反而是真实的成本，选型的合理性在于匹配，不在于堆高。
实战案例：常见踩坑与正解
踩坑一：按普通工业件的物性表直接套到航空特种场景，结果装车半年就出现烟毒超标 / 低温脆裂 / 阻燃复检不过。
正解：这类场景是标准先行——适航或轨交的阻燃烟毒标准、低温冲击标准全部要重新核对，普通改性尼龙物性表只覆盖常温力学性能，完全不适用——这是 80% 首批送样失败的根因。
踩坑二：为了减重把玻纤含量一路加上去，结果薄壁处玻纤外露、表面浮纤、尺寸飘。正解：减重靠结构而不是单纯加纤，薄壁件走 GF30 上限，超过就要换高流动牌号或加矿物填充。
踩坑三：只验证常温性能，忽略了高低温交变和盐雾。正解：服役环境验证要按整机寿命做，高低温循环 + 盐雾 + 湿热老化三项一起做，少一项就是批量隐患。
这三个坑都是量产前必须自查的清单。
补记：四条来自船用管路的延伸判断
船用管路的寿命证明正在从抽检走向状态监测，关键管段贴应变和温度传感，寿命的预测有数据支撑。监测数据的积累让材料的寿命曲线更准，也给了材料商和船东直接对话的数据语言，管路的数字化是材料商的新机会，传感数据的解读能力是新的服务产品。
绿色船舶的趋势下，压载水和排放系统的材料环保要求在提升，材料的环境声明和可回收性进入船东的关注清单。
塑料管路的轻量化对船舶油耗的贡献可以量化，轻一公斤省的燃油按航程算，这个账算给船东听，塑料管路的故事就立住了，环保和省钱在这里是同一件事。
修船市场对管路件的需求是快反型的，船靠港的窗口短，管路件的供应要按小时计。修船件的备货结构和常规供货不同，常用规格的库存深度是竞争力的核心，库存周转和快反能力把修船市场做成了制造业里少见的零售型生意，材料商在这块的玩法要换脑子。
船用塑料管路的规范演进值得关注，允许使用的系统范围在扩大，每次规范修订都打开新的替代空间。跟踪规范的修订节奏，提前把新允许系统的材料方案备好，规范生效的时候你就是最 ready 的供应商，合规窗口的先发优势在船用市场尤其明显。
增补：另四条来自机舱的观察
观察之一，机舱管路的巡检数据可以反过来优化设计，船舶的管路故障记录按位置和模式分类，高发的位置就是设计的薄弱位。
有家厂把几十条船的故障记录整理成设计改进清单，下一批船的管路布置直接改图，故障率降了一半，售后数据的整理是一次性的投入，收益覆盖整个产品代际。
观察之二，船员的操作习惯是管路工况的一部分，阀门开关的速度、维修时拆装的手法，都会改变管路的受力。给船员的操作培训配一页纸的图示，塑料管路的开关速度和拆装要点画清楚，操作引起的故障能压下去三成，材料的敌人常常不是环境，是使用方式。
观察之三，船舶的改装修理市场对管路件的需求零散但利润好，改装单按项目报价，材料加加工一起卖。改装项目的材料方案要和船级社的临时检验配套，文件的准备速度决定项目的接单能力，改装市场的竞争是速度和文件的双重竞争。
观察之四，内河船的电动化带来新的管路需求，电池舱的冷却管路和消防管路是新增系统，这些系统的工况和传统管路不同。
电动船的管路件是船用市场的新增长点，冷却液的耐化学和消防介质的耐受是两个新考题，先建验证方案的厂先接单，新系统没有在位者，大家都在同一起跑线。
结语
先把话讲清楚，再谈价钱——选料这件事，越早问越省事。
这类件的选料与试模，可以一起聊。
What type of modified nylon is used for the airframe parts of the 108 drone?
Hierarchical material selection for aircraft structure
The drone body is not a single material. The main load-bearing components (arms, central plate) use carbon fiber epoxy composite or carbon fiber reinforced PA.
Secondary load-bearing components (motor mount, gimbal bracket, landing gear) use PA66-GF30 up to GF50;
Functional components (antenna cover, battery compartment, wire clip) use PA66-GF20 or PA12.
Modified nylon in drones serves as secondary load-bearing and functional components, while the primary load-bearing is the composite structure.
On-site restoration
Last spring, at a shipowner complaint handling meeting at a ship equipment factory, the engineering manager spread out a photo of the piping system. On a cargo ship along the coastal route, there was leakage at the joints of the ballast water pipes, and rust had flowed more than a meter along the hull. The shipowner's exact words were: 'My ship runs the Middle East route, with a hold temperature of forty degrees. What temperature were your pipes designed for?'
Conventionally designed, that's correct, but the cabin temperature in the Middle East broke through the conventional design. Later, the materials at the joints were upgraded overall, and the leakage repairs were completed within three months. From then on, this factory put the climate of the flight routes on the first page of the quotation, and material specifications followed the flight routes; this was the understanding they gained through repairs.
Core requirements of the boom and motor base
The boom bears the motor thrust, propeller vibration, and landing impact, making it a fatigue part. The core indicators are fatigue strength and creep resistance, not static tensile strength.
PA66-GF40 is mainstream in this position — GF40 has 25% higher stiffness than GF30 and 30% better toughness than GF50, making it a compromise between stiffness and toughness.
The motor mount needs to additionally consider motor heating—the motor mount temperature can reach 80-100°C, and a heat-resistant stabilizer should be added.
Vibration fatigue is a hidden killer
The drone's propeller rotates at high speed, and the body is subjected to high-frequency vibration for a long time. The fatigue strength of PA is only 25%-30% of its static strength, far lower than that of metal.
Three things to do in the design: first, add ribs at vibration node positions; second, avoid sharp corners and sudden thickness changes; third, use metal inserts at critical joints to distribute stress.
Many structural fractures are not due to insufficient strength, but fatigue cracks originate from sharp corners.
The boundary between weather resistance and moisture absorption
Drones mostly operate outdoors, and PA66 experiences a 30%-40% decrease in stiffness after absorbing moisture — this is a hidden cause of many flight accidents.
In areas with high humidity, three points should be considered: first, use PA66-GF40 instead of GF30, leaving a margin for stiffness after moisture absorption;
Second, perform surface pore sealing treatment; third, long-term storage should be dry.
PA12 with lower water absorption is suitable for making thin-walled functional parts, but it is expensive.
Lightweighting needs to consider the entire machine
Drone weight reduction directly translates to longer flight time, and every 1 g matters. But when it comes to modified nylon, weight reduction has to be considered for the whole machine: GF50 is only 0.07 g/cm³ denser than GF30, yet its stiffness is 35% higher—
On parts with limited stiffness, adding fiber actually reduces weight (allowing for thinner walls).
What really needs to be reduced is density: the density of the mineral-filled system is lower, making it suitable for non-load-bearing cover plate components.
Extended Judgment: Hidden Variables of UAV Structural Components
There are three hidden variables that are easiest to overlook. The first is the anisotropy caused by glass fiber orientation — the shrinkage difference between the flow direction and the perpendicular direction of injection-molded parts is 0.3%-0.5%, slender machine arms will warp, and mold flow analysis needs to be performed on the mold.
Second, recycled material is strictly prohibited — adding recycled material to fatigue parts reduces lifespan by more than 50%. Third, low-temperature high-altitude environments — at altitudes where the temperature is below -30℃, the glass transition temperature of the toughening agent must be lower than the operating temperature, otherwise the toughening will fail.
A deeper look: The origin of several numbers
Among the four operating conditions of ship pipelines, the ballast water system is the most corrosive. The combination of seawater, microorganisms, and treatment chemicals continuously chemically attacks the materials.
Long-chain nylon has good chemical resistance, but chloride ions in seawater have a targeted attack on certain systems. Chlorine resistance testing cannot be skipped. The difference between soaking in lab saltwater and real seawater lies in the microbial aspect. If conditions allow, it is recommended to do an actual seawater exposure test as a supplementary round.
Long carbon chain nylon is the main material for marine pipelines. Its low water absorption provides dimensional stability, and the seals at the joints are not affected by humidity changes. Long carbon chains also have good low-temperature toughness; during winter operations at northern ports with temperatures below minus ten degrees, the pipeline's resistance to freeze-thaw expansion is an inherent performance.
The material price is somewhat higher, but the cost of pipeline leaks is amplified tenfold on the ship. Maintenance depends on the available dock repair window, and the cost of one dock repair is enough to replace all the pipelines on the ship.
Hydrolysis resistance is a key indicator for water pipes. In high-humidity environments near hot water pipe sections and ballast tanks, hydrolysis of ordinary nylon is a chronic issue, leading to embrittlement and cracking after several years.
The selection of hydrolysis-resistant grades is classified according to the location of the pipe segment. High grades are used near the heat source and in areas that are constantly wet, while the rest are selected according to the standard. The cost saved by graded material selection can cover the price difference of upgrading all the materials on the ship, and it is worth calculating this for the shipowner.
Water hammer resistance and freeze-thaw resistance are structural-level considerations. The impact pressure from water hammer is several times that of static pressure, and the rigidity design of pipe clamps determines the force path of the piping. The clamp spacing for plastic pipes needs to be denser than for metal pipes. Freeze-thaw issues are a concern for northern ships; residual water inside the pipes can freeze and expand. The lowest points and elbows of the piping are high-risk locations for freeze-thaw cracking, so both drainage design and low-temperature toughness of the materials act as double insurance.
Fuel lines must pass through both electrostatic and permeation checks. The accumulation of static electricity on plastic pipes is a safety hazard, so conductive-grade pipes combined with grounding design are used. Permeation refers to the low-molecular components of fuel passing through the pipe wall, and if the permeation rate exceeds the standard, the cabin will be full of a fuel smell. There are dedicated methods for verifying both checks, and the materials used for fuel lines are among the most rigorously tested types in marine plastics.
The cabin temperature is the baseline for material selection. The cabin temperature is usually 40 to 50 degrees Celsius throughout the year, and it can reach 60 degrees on routes in the Middle East and near the equator. The temperature rating of pipelines is determined by adding the maximum cabin temperature to the temperature of the medium inside the pipeline. If the temperature rating is set too low, the overall lifespan curve shifts downward; if set too high, the cost increases. Determining values by region is the direction of refined design. Pipelines on the same ship can be divided into two levels according to the region.
Engineering Test: 4 Mandatory Tests
Test 1: Fatigue strength. PA66-GF40 has a fatigue strength of 28% of its static strength at 10⁷ cycles, while carbon fiber composites are 55% — fatigue is the weak point of PA.
Test 2: Stiffness after moisture absorption. After PA66-GF30 absorbs 2.5% moisture, the flexural modulus decreases by 38%, and GF40 decreases by 32% — extra margin should be left in the wet area.
Test 3: Comparison of GF content. The flexural modulus of GF30/GF40/GF50 is 8500/10500/13000 MPa respectively, and the notched impact decreases in order 12/9/6.5 kJ/m².
Test 4: Weight reduction account. The robotic arm is changed from PA66-GF30 to GF40, wall thickness is reduced by 0.4 mm, single piece weight is reduced by 8 g, stiffness remains the same.
Boundary Declaration
| Operating condition | Recommended materials |
|---|
| Boom / Central Plate | Carbon fiber composite material or carbon fiber reinforced PA |
| Motor Mount / Gimbal Bracket | PA66-GF40 Heat Resistant |
| Landing gear | Toughened PA66-GF30 |
| Antenna Cover / Battery Compartment | PA66-GF20 |
| High humidity area | PA66-GF40 or PA12 |
Engineering Memo
The main load-bearing structure of the drone is made of composite material, while modified nylon is used for secondary load-bearing and functional parts — GF40 is a compromise between stiffness and toughness.
The real shortcomings are fatigue (only 28% of static strength) and a 38% decrease in stiffness after moisture absorption; these two points must have a margin.
Three consecutive follow-up questions
Question 1: How much metal piping can plastic piping replace on a ship? In the lower section of the seawater system with large diameters, metal still dominates, while plastic pipes can replace upper sections and small diameters to a higher extent. The boundary for replacement is determined by fire protection and mechanical damage risks, which are also limited by regulations. The boundaries are set according to the allowable range of classification societies, and replacement is allowed within the regulations.
Question 2: What method is used for pipeline connections? Mainly butt fusion and flange connections are used. The reliability of butt fusion depends on process parameters, while flange connections have good removability. Since maintenance conditions on the ship are poor, enough space should be left for flange positions, and butt fusion should be done correctly the first time. The distribution of the two methods is designed according to the maintenance plan, and the maintenance plan is part of the pipeline design.
Question 3: Is classification society certification troublesome? The certification cycle for materials is counted in years, but once certified, it becomes a long-term qualification. Certificates from classification societies are the passport for marine materials. The testing items for certification largely overlap with routine verification. If the overlapping items are completed in advance all at once, the incremental cost of certification is controllable. This investment is a must for manufacturers making marine products.
Reverse Cases and Final Judgments
A certain factory equipped a river ship with marine-spec pipelines. The material grade was over-specified, which increased costs; the shipowner accepted this. However, after delivery, the feedback from the engine room installation was that the pipes were too stiff, and the scrap rate in the bending process increased. Marine materials are stiff, and river ships have small-diameter pipes with many elbows, making workability a new problem.
The lesson from this case is that higher material grades are not necessarily better; specifications should follow the working conditions. The money spent on over-specification is spent on unnecessary indicators, while the scrap rate of elbows is the real cost. The rationality of selection lies in matching, not in stacking higher.
Practical Case Study: Common Pitfalls and Correct Solutions
Pitfall 1: Directly applying the physical property table of ordinary industrial parts to special aviation scenarios, resulting in smoke and toxicity exceeding standards / low-temperature brittleness / failing flame-retardant reinspection after half a year of installation.
Correct: For this type of scenario, standard prerequisites apply — all the flammability and smoke toxicity standards for airworthiness or rail transit, as well as low-temperature impact standards, need to be re-checked. The property tables for regular modified nylon only cover ambient temperature mechanical properties and are completely unsuitable — this is the root cause of 80% of the initial sample failures.
Pitfall 2: To reduce weight, the fiberglass content was increased all the way, resulting in exposed fiberglass in thin-walled areas, surface fiber bloom, and dimensional deviations. Correct approach: Weight reduction should rely on structure rather than simply adding fibers. For thin-walled parts, stick to a GF30 limit; if exceeded, switch to a high-flow grade or add mineral fillers.
Pitfall 3: Only verifying performance at room temperature, neglecting alternating high and low temperatures and salt spray. Correct approach: Service environment verification should be based on the entire machine's lifespan, with high and low temperature cycling, salt spray, and damp heat aging carried out together; missing any one of these is a hidden risk for mass production.
These three pitfalls are all checklists that must be self-inspected before mass production.
Supplementary note: Four extensions from ship piping judgments
The proof of the service life of marine pipelines is shifting from random inspections to condition monitoring. Key pipeline sections are equipped with strain and temperature sensors, and life predictions are supported by data. The accumulation of monitoring data makes the material life curves more accurate and provides material suppliers and shipowners with a data-based language for direct communication. The digitization of pipelines is a new opportunity for material suppliers, and the ability to interpret sensor data is a new service product.
Under the trend of green ships, the environmental requirements for materials used in ballast water and emission systems are increasing, and environmental declarations and recyclability of materials have entered the shipowner's list of concerns.
The contribution of lightweight plastic piping to ship fuel consumption can be quantified. The fuel saved per kilogram over the voyage can be calculated, and if this calculation is shown to the ship owner, the story of plastic piping becomes convincing. Here, environmental protection and saving money are the same thing.
The ship repair market has a fast-response demand for piping components. The window for ships to dock is short, so the supply of piping components needs to be measured by the hour. The stocking structure for ship repair parts differs from regular supply; the inventory depth of commonly used specifications is the core of competitiveness. Inventory turnover and fast-response capability have made the ship repair market a rare retail-type business in the manufacturing industry, requiring material suppliers to change their approach in this area.
The evolution of standards for marine plastic piping is worth paying attention to. The range of systems allowed is expanding, and each revision of the standards opens up new alternative options. By keeping track of the pace of standard revisions and preparing material solutions for newly allowed systems in advance, you will be the most ready supplier when the standards come into effect. The first-mover advantage in compliance windows is particularly evident in the marine market.
Supplement: Four more observations from the cabin
Observation one: The inspection data of the cabin pipelines can be used to optimize the design. The failure records of the ship's pipelines are classified by location and pattern, and the locations with a high incidence of failures indicate the weak points in the design.
A factory organized the fault records of dozens of ships into a design improvement list. For the next batch of ships, the piping layout was directly revised on the drawings, reducing the failure rate by half. Organizing after-sales data is a one-time investment, and the benefits extend across the entire product generation.
Observation two: The crew's operating habits are part of the pipeline conditions. The speed at which valves are opened and closed, as well as the techniques used during disassembly and assembly for maintenance, can change the stress on the pipeline. Provide the crew with a page of illustrated instructions for operation, clearly showing the key points for valve speed and disassembly/assembly of plastic pipelines. Faults caused by operation can be reduced by 30%. The enemy of materials is often not the environment, but the way they are used.
Observation three: The market for ship modification and repair has a scattered demand for piping components but good profit margins. Modification orders are quoted per project, selling materials together with processing. The material plan for a modification project needs to match the temporary inspection of the classification society, and the speed of document preparation determines the ability to secure orders. Competition in the modification market is both about speed and documentation.
Observation Four: The electrification of inland vessels brings new piping requirements. The cooling piping for battery compartments and fire protection piping are newly added systems, and the operating conditions of these systems are different from those of traditional piping.
Piping components for electric boats are a new growth point in the marine market. The chemical resistance of coolants and the tolerance of fire-fighting media are two new challenges. Manufacturers that first establish a verification plan get the orders. No one is currently in place for the new systems, so everyone is starting from the same starting line.
Conclusion
Make your point clear first, then talk about the price—when it comes to choosing materials, the earlier you ask, the easier it is.
The material selection and mold trial for this type of part can be discussed together.
