行业组件数据 · 2026

螺纹体

Threaded body is a cylindrical component with external or internal helical ridges used to create secure, pressure-tight connections in fluid and gas systems.

技术定义与适配语境
典型 螺纹体 会按材料、尺寸公差、适配关系和失效风险在 机械和设备制造 中评估。

A threaded body is a precision-engineered cylindrical component featuring helical ridges (threads) that mate with corresponding threads on another component to form a mechanical joint. In industrial applications, it serves as the primary structural element in pipe fittings, valves, couplings, and connectors, enabling assembly, disassembly, and maintenance of pressurized systems. Thread geometry (pitch, depth, angle) is standardized to ensure compatibility and sealing performance under various operational conditions including temperature fluctuations, vibration, and pressure loads.

组件规格

定义
A threaded body is a precision-engineered cylindrical component featuring helical ridges (threads) that mate with corresponding threads on another component to form a mechanical joint. In industrial applications, it serves as the primary structural element in pipe fittings, valves, couplings, and connectors, enabling assembly, disassembly, and maintenance of pressurized systems. Thread geometry (pitch, depth, angle) is standardized to ensure compatibility and sealing performance under various operational conditions including temperature fluctuations, vibration, and pressure loads.
工作原理
The working principle relies on helical thread engagement between mating components. When rotated, the threads convert rotational torque into axial force, drawing components together to create a mechanical lock. In sealing applications, this axial compression deforms gaskets or sealing surfaces, forming a pressure-tight barrier. Thread geometry (tapered vs. parallel) determines whether sealing occurs through thread interference (NPT) or requires separate sealing elements (BSPP).
材料
Carbon steel (ASTM A105/A350)stainless steel (304/316)brass (C36000)alloy steelduplex stainless steelnickel alloys. Material selection depends on corrosion resistancepressure ratingtemperature rangeand fluid compatibility.
Size Range
1/8" to 12" nominal diameter
Thread Type
NPT, BSPT, BSPP, UN/UNF, Metric
Surface Finish
32-125 µin Ra
Pressure Rating
150-2500 PSI
Thread Tolerance
Class 2A/2B, Class 3A/3B
Temperature Range
-50°C to 400°C
标准
ISO 7-1ISO 228-1ASME B1.20.1DIN 2999DIN 3852

行业分类与别名

螺纹体 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Improper thread engagement during assembly->Cross-threading leading to connection failure and leakage->Use alignment guides, hand-start threads before torquing, implement visual inspection procedures
Corrosion from chemical exposure->Thread degradation causing loss of sealing pressure and structural integrity->Material selection based on fluid compatibility, protective coatings, regular corrosion monitoring
Vibration-induced loosening->Loss of preload leading to leaks and potential disconnection->Use thread-locking compounds, locking nuts, safety wire, or prevailing torque features

工业生态与工程逻辑

0
Thread stripping from overtightening
1
Cross-threading during assembly
2
Corrosion in aggressive environments
3
Leakage from improper sealing
4
Fatigue failure under cyclic loading

合规与检测

tolerance
Thread dimensions per ASME B1.20.1 for NPT (±0.003" pitch diameter), ISO 7-1 for taper threads
test method
Pressure testing per ISO 5208, helium leak testing, dimensional verification with thread gauges, torque-tension testing

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the difference between NPT and BSPT threaded bodies?

NPT (National Pipe Taper) threads are tapered with a 60° thread angle and seal through thread interference. BSPT (British Standard Pipe Taper) threads are also tapered but have a 55° thread angle. They require thread sealant for proper sealing and are common in international applications.

How do you prevent thread galling in stainless steel threaded bodies?

Use anti-galling compounds, ensure proper lubrication, avoid overtightening, and consider dissimilar material pairings (e.g., brass with stainless steel). Controlled installation torque and slow assembly speeds also reduce galling risk.

What maintenance is required for threaded connections?

Regular inspection for leaks, corrosion, and thread damage. Re-torquing after thermal cycles, replacing worn gaskets/sealants, and cleaning threads before reassembly. Follow manufacturer torque specifications to prevent under/over-tightening.

我可以直接联系工厂吗?

CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。

CNFX Industrial Component Index · 机械和设备制造

数据基础

CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。

初步技术归类
本页用于结构化准备研究、RFQ 和供应商评估,不替代买方自己的供应商资质审查、标准核验和技术批准。

请求制造能力信息: 螺纹体

说明目标数量、应用场景、交期和关键技术要求,用于准备 RFQ 或供应商评估。

谢谢,信息已发送。
谢谢,信息已收到。

需要制造 螺纹体?

对比具备该组件加工或装配能力的制造商资料。

创建制造商档案 联系我们
上一个组件
螺纹/法兰
下一个组件
螺纹孔/网格图案
URN:CNFX:ME:UNIT:THREADED_BODY