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When clients submit valve body drawings in SS 304, our first question is always about the operating environment. For applications near saltwater or chlorine, we recommend upgrading to SS 316. However, for water valves, air valves, food processing steam valves, and general industrial hydraulic valves, SS 304 provides excellent performance without the 20-30% premium cost of SS 316.
SS 304 is the industry standard for machined valve bodies due to its strength (yield strength ~205 MPa), adequate corrosion resistance for most industrial environments, and good machinability compared to higher-grade stainless steels. We maintain comprehensive SS 304 stock in round and hex bar forms, enabling same-day machining initiation upon order receipt.
The primary machining challenge with SS 304 is heat management. Stainless steel's low thermal conductivity (approximately one-third that of carbon steel) causes heat to concentrate at the cutting edge rather than dissipating through chips. We optimize this process through controlled speeds (80-120 m/min), higher feed rates, and flood coolant systems, using sharp carbide inserts with positive rake geometry and specialized coatings (TiAlN or AlTiN).
Valve bodies present specific technical requirements: internal flow passages require Ra 1.6 or better surface finish to minimize pressure drop and turbulence; sealing surfaces demand Ra 0.8 or better flatness for proper sealing; and threaded ports (NPT, BSPT, or G threads) must be precision-cut to exact depth and angle specifications without chatter marks.
| Specification | Details |
|---|---|
| Product Name | CNC Machined Stainless Steel 304 Valve Body |
| Material Options | SS 304, SS 304L (low carbon for welding), SS 316 (chloride environments) |
| Tolerance | ±0.01mm (standard), ±0.005mm (sealing surfaces, bore diameters) |
| Surface Finish | Ra 0.8 (sealing faces), Ra 1.6 (flow passages), Ra 3.2 (external) |
| Pressure Rating | 150 PSI to 3,000 PSI (application dependent) |
| Thread Options | NPT, BSPT, G (BSP), Metric, SAE, Custom |
| Surface Treatment | Passivated (standard), Electropolished (food/pharma), Pickled |
| Certifications | ISO 9001:2015, IATF 16949, RoHS, CE, REACH |
| Lead Time - Prototype | 3-7 days |
| Lead Time - Production | 7-15 days |
| MOQ | 1 piece (prototype), 100+ (production) |
| Origin | Dongguan, China |
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العنوان
المصنع الأول: لا7طريق مينغزو 2، شيبي، هوانغجيانغ، دونغغوان، غوانغدونغ، الصين 523752 المصنع 2: لا19طريق مينجزو 1، شيبي، هوانججيانج، دونغغوان، غوانغدونغ، الصين 523752
الهاتف
86-769-83391025-8005
البريد الإلكتروني
kristen.yang@jinbo-china.com
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