行业组件数据 · 2026

安装孔/螺栓

Precision-engineered mounting holes and bolts designed for secure valve housing installation in industrial systems.

技术定义与适配语境
典型 安装孔/螺栓 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。

Mounting holes are precisely machined apertures in valve housings that accommodate bolts for secure attachment to pipelines, manifolds, or supporting structures. These components ensure proper alignment, prevent leakage, and maintain structural integrity under operational pressures and vibrations. The bolt-hole interface creates a clamped joint that distributes mechanical loads evenly across the flange surface.

组件规格

定义
Mounting holes are precisely machined apertures in valve housings that accommodate bolts for secure attachment to pipelines, manifolds, or supporting structures. These components ensure proper alignment, prevent leakage, and maintain structural integrity under operational pressures and vibrations. The bolt-hole interface creates a clamped joint that distributes mechanical loads evenly across the flange surface.
工作原理
Mounting holes provide geometric constraints for bolt placement, while bolts apply tensile preload through torque application. This creates friction at flange interfaces that resists shear forces and maintains gasket compression. The combined system transforms bolt tension into clamping force that seals the valve housing against pressure differentials and mechanical stresses.
材料
Holes: Machined directly into valve housing material (typically ASTM A216 WCB cast steel or ASTM A351 CF8M stainless). Bolts: ASTM A193 B7 alloy steel or ASTM A320 L7 for high-temperature applicationswith ISO 898-1 Class 8.8 or 10.9 strength grades. Corrosion protection: Zinc platinghot-dip galvanizingor Xylan coatings.
Surface finish
Ra 3.2 μm maximum for sealing surfaces
Flange thickness
12-50mm depending on pressure rating
Preload accuracy
±15% of target torque
Bolt thread pitch
ISO 262 coarse or fine series
Hole diameter tolerance
H7/g6 per ISO 286
Bolt torque specification
30-200 Nm per ASME PCC-1
标准
ISO 9001ASME B16.5DIN 2501API 6DEN 1092-1

行业分类与别名

安装孔/螺栓 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

Incorrect bolt torque sequence->Uneven flange loading leading to gasket blowout->Implement cross-pattern torque sequence per ASME PCC-1, use calibrated torque wrenches, and verify with ultrasonic bolt tension measurement
Corrosion between steel bolts and stainless housing->Seizure making maintenance disassembly impossible->Apply anti-seize compounds with nickel or copper bases, specify isolation washers, or use compatible material combinations

工业生态与工程逻辑

0
Stress corrosion cracking in chloride environments
1
Galvanic corrosion between dissimilar metals
2
Bolt loosening from vibration
3
Flange warpage from uneven torque application
4
Thread stripping from over-torquing

合规与检测

tolerance
Hole position within ±0.5mm of true position, perpendicularity within 0.1mm per 100mm flange thickness
test method
Dye penetrant inspection for crack detection, ultrasonic thickness measurement, bolt load verification using strain gauges or hydraulic tensioners

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 determines the number of mounting holes in a valve housing?

The quantity follows ASME B16.5 standards based on flange size and pressure class. Typically 4-16 holes arranged in bolt circle patterns to ensure even gasket compression and prevent flange distortion.

How does bolt preload affect valve performance?

Proper preload maintains gasket sealing integrity. Insufficient preload causes leakage under pressure cycling, while excessive preload can distort the flange or cause bolt fatigue failure. Torque values are calculated based on bolt grade and lubrication conditions.

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CNFX Industrial Component Index · 机械和设备制造

数据基础

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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: 安装孔/螺栓

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。

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