Cangzhou Hongxin is a leading China-based manufacturer specializing in precision 1/2 inch black welding pipe nipples. These industrial-grade fittings are designed with one end featuring standard threading and the opposite end prepared for welding, creating permanent, high-strength connections in piping systems. Our black finish provides natural corrosion protection while maintaining cost-effectiveness for various industrial applications.

Key Specifications

• Nominal Size: 1/2 inch (DN15)

• Thread Type: NPT (National Pipe Taper) standard

• Material: ASTM A53/A106 carbon steel

• Finish: Black (mill finish)

• Design: One threaded end, one welding-ready end

• Pressure Rating: Suitable for medium to high-pressure systems

• Temperature Range: -20°F to 750°F (-29°C to 399°C)

Complete Size Chart - 1/2" Black Welding Pipe Nipple

Material Specifications

• Base Material: Carbon Steel ASTM A53 Grade B / A106 Grade B

• Chemical Composition:

  • Carbon (C): 0.30% max

  • Manganese (Mn): 0.29-1.06%

  • Phosphorus (P): 0.035% max

  • Sulfur (S): 0.035% max

• Mechanical Properties:

  • Tensile Strength: 415 MPa min

  • Yield Strength: 240 MPa min

  • Hardness: 137 HB max

Applications

• Plumbing Systems: Water supply and drainage connections

• Industrial Piping: Process lines and equipment connections

• HVAC Systems: Heating and cooling installations

• Fire Protection: Sprinkler system components

• Manufacturing: Equipment and machinery piping

Quality Assurance

• 100% dimensional inspection

• Thread gauge verification per ANSI B1.20.1

• Material certification per EN 10204 3.1

• Visual inspection for surface defects

• Hydrostatic testing available upon request

Manufacturing Process

1. Raw Material Selection: Certified carbon steel pipes

2. Precision Cutting: CNC cutting to exact lengths

3. Thread Machining: CNC threading to NPT standards/BSPT standards

4. End Preparation: Beveling for welding readiness

5. Surface Treatment: Cleaning and black finish application

6. Quality Control: Multi-stage inspection process

7. Packaging: Industrial-grade packaging for export

Ordering Information

• Minimum Order Quantity: 500 pieces standard sizes

• Lead Time: 15-20 days for standard orders

• Customization Available: Special lengths, wall thicknesses

• Packaging Options: Bulk boxes or customized packaging

• Sample Policy: Samples available with minimal charge

Why Choose Hongxin Factory?

1. 30+ Years Manufacturing Experience

2. ISO 9001:2015 Certified Facility

3. Competitive Factory-Direct Pricing

4. Custom Engineering Capabilities

5. Global Export Expertise

6. Comprehensive Quality Documentation

FAQ

Q: What is the difference between Schedule 40 and Schedule 80?
A: Schedule 80 has thicker walls and higher pressure rating than Schedule 40.

Q: Can you supply metric threaded versions?
A: Yes, we manufacture BSPT and metric threads upon request.

Q: Are these nipples suitable for steam applications?
A: Yes, with proper material selection and pressure rating verification.

Q: Do you provide material test certificates?
A: Yes, full material certification with every shipment.