High Strength Stainless Steel Fitting for Plumbing Systems with NPT Thread

• Customization: Available
• Standard: DIN, ANSI, GB, JIS, BSW
• Material: Stainless Steel
• Model NO.: St9
• Connection: Male
• Surface Treatment: Polished
• Head Type: Round
• Sealing Feature: Rubber O - Ring
• Thread Standard: NPT
• Application Field: Fire - Fighting
• Corrosion Resistance: High
• Installation Type: Threaded
• Leak - Proof Level: Excellent
• Stress Design: Stress - Relieved
• Assembly Ease: Quick
• Compatibility: Wide
• Transport Package: Shockproof Foam + Wooden Case
• Specification: Customizable
• Trademark: Zeyang
• Origin: Ningbo, Zhejiang, China
• Production Capacity: 50000PCS/Year

Product Description

This product is a stainless - steel fire - fighting pipe fitting. It is precisely turned from 304 stainless steel. Both ends are integrated with NPT standard threads (accuracy ±0.05mm), and the middle section has a smooth transition to reduce stress concentration. The internal black rubber sealing ring (Shore 70A) enhances pressure - bearing and leak - proof performance. The surface is polished (Ra≤0.8μm) to improve corrosion resistance. It has passed the ASTM B117 salt spray test and the 2.5MPa hydrostatic pressure certification, and is suitable for fire - fighting sprinkler systems, industrial pipelines, and HVAC systems.

Core Values

• Safety and Reliability: The double - thread + sealing ring design reduces the leakage rate by 90%.
• Long - lasting Durability: The 304 stainless steel has a service life of ≥10 years (10,000 - hour salt spray test).
• Efficient Installation: It is compatible with standard tools, and the assembly efficiency is increased by 40%.

Product Parameters

Parameter Item	Specification (Measured Value)	Tolerance/Standard
Total Length	120mm	±1mm
Outer Diameter	Φ32mm	H8 - grade tolerance
Inner Diameter	Φ24mm	H9 - grade tolerance
Thread Specification	NPT 1/2" (Thread Depth 20mm)	ISO 965 standard
Surface Hardness	304 Stainless Steel (HB90)	ASTM B571
Pressure - bearing Rating	2.5MPa (Static Hydrostatic Pressure Test)	IEC 60068 - 2 - 14
Operating Temperature	- 40ºC ~ 150ºC	IEC 60068 - 2 - 14

Detailed Photos

Applicable scenarios

Q1. What customization services do you offer?
A1: We offer custom machining based on your drawings or samples, including material selection, size adjustments, shape design, surface treatments (anodizing, plating, painting, etc.), thread processing, laser engraving, and more to meet various industry needs.

Q2. Can you manufacture parts based on my design drawings?
A2: Yes, we can manufacture parts according to your CAD drawings or 3D models. Please provide detailed design files such as STEP, IGES, DWG, or PDF format to ensure precise manufacturing.

Q3. What material options do you offer?
A3: We offer a wide range of materials, including aluminum alloys (6061, 7075, etc.), stainless steel, carbon steel, brass, copper, titanium alloys, and plastics (POM, nylon, etc.). You can choose the most suitable material for your needs.

Q4. What is your machining accuracy?
A4: Our CNC machining accuracy can reach ±0.01mm. Specific tolerance requirements can be adjusted according to customer needs and confirmed before production.

Q5. How do you ensure product quality?
A5: We implement strict quality control measures, including raw material inspection, in-process monitoring, final dimension inspection, and surface finish checks, ensuring that all products meet customer requirements.

Q6. What is your production lead time?
A6: Production time depends on the complexity of the parts and order quantity. Typically, small batch orders take 7-15 days, while larger orders will have a specific lead time confirmed after evaluation.

Q7. Do you support small batch orders?
A7: Yes, we accept small batch custom orders. The minimum order quantity depends on the complexity and type of product. Feel free to contact us for more details.

Q8. How do you ship orders? Do you support international shipping?
A8: We offer multiple shipping options, including DHL, FedEx, UPS, sea freight, and air freight, with worldwide delivery available. You can choose the most suitable shipping method based on your needs.

Q9. How can I get a quote?
A9: You can submit an inquiry through our website or contact us via email with your product drawings, material requirements, order quantity, and any special requests. We will provide a detailed quote within 24 hours.

Q10. Do you provide after-sales service?
A10: Yes, we offer comprehensive after-sales support, including product quality assurance and installation guidance. If you encounter any issues, please feel free to contact our customer service team.