Product Overview
Our Seamless Carbon Steel ASME B16.9 buttweld pipe fittings are the industry benchmark for high-pressure reliability. Utilizing the advanced Mandrel Hot-Pushing method, JS FITTINGS produces elbows, tees, and reducers that feature superior grain flow and zero weld-seam vulnerabilities. Every fitting is precision-beveled to 37.5° for flawless field integration, ensuring your pipeline joints are as strong as the pipe itself.

ASME B16.9 Dimensional Accuracy
Strict compliance with ASME B16.9 standards ensures precise dimensional tolerances and pressure ratings. You receive fittings that align perfectly during installation without costly field adjustments.
Wrought Manufacturing Process
Hot-forged construction aligns steel grain structure for enhanced fatigue life. This process delivers superior mechanical properties compared to cast alternatives.
Full Penetration Weld Design
Precision-engineered bevel ends facilitate complete joint fusion. The circumferential butt weld creates leak-proof sealing that matches pipe wall strength.
Multiple Size Capabilities
Available in sizes from NPS 1/2" to 48" with custom reducing configurations. Our production capacity handles both standard and special dimensional requirements.
Advanced Surface Treatment
Sandblasting plus anti-rust oil protection or eco-friendly paint coating options. These treatments provide corrosion resistance for harsh industrial environments.
|
Parameter |
Specification |
|
Standard |
ASME B16.9, EN 10253, GOST |
|
Material Grade |
ASTM A234 WPB |
|
Size Range |
NPS 1/2" - 48" |
|
Pressure Rating |
150# - 2500# |
|
Tensile Strength |
Min 60,000 psi |
|
Yield Strength |
Min 35,000 psi |
|
Elongation |
Min 22% |
|
Bevel Angle |
37.5° ± 2.5° |
|
Wall Thickness |
Schedule 10 - XXS |
|
Temperature Range |
-29°C to 427°C |
Standards & Certifications
Our Carbon Steel ASME B16.9 Buttweld Pipe Fittings comply with international standards including ASME B16.9, EN 10253, and GOST specifications. Quality certifications include ISO 9001, CE/PED 2014/68/EU, and GOST-R. Third-party approvals from NIOC, ADNOC, and PETROBRAS validate performance in demanding applications. Complete technical documentation packages accompany all shipments.
Chemical Composition (ASTM A234 WPB)
· Carbon: ≤ 0.30%
· Manganese: 0.29-1.06%
· Phosphorus: ≤ 0.035%
· Sulfur: ≤ 0.035%
· Silicon: ≤ 0.40%
Mechanical Properties
· Tensile Strength: 60,000 psi minimum
· Yield Strength: 35,000 psi minimum
· Elongation: 22% minimum in 2"
· Impact Test: Charpy V-notch at specified temperatures
Our 42-year manufacturing expertise employs hot-pushing technology for seamless construction. Four advanced production lines utilize controlled forging temperatures to optimize grain structure. Automated machining ensures consistent wall thickness and concentricity. Heat treatment processes normalize material properties for predictable performance. Quality control inspections verify dimensional accuracy throughout production.
Standard Finish Options:
· Sandblasted + Anti-rust oil protection
· Water-based eco-friendly paint coating
· Epoxy coating for enhanced corrosion resistance
· Galvanized finish for outdoor applications
Our 100-meter automated painting lines provide uniform coverage. Eco-friendly sandblasting systems prepare surfaces for optimal coating adhesion. These finishes extend service life in corrosive environments.
These fittings serve critical functions in oil and gas pipelines, chemical processing plants, and shipbuilding projects. Power Generation facilities rely on their high-temperature performance. Construction projects utilize them for HVAC and plumbing systems. Pharmaceutical and food processing industries benefit from their smooth internal surfaces that prevent contamination.
Protective packaging includes wooden cases for export shipments and plastic caps for end protection. Our logistics network supports 30,000+ tons annual delivery capacity. Standard delivery timeframes range from 15-30 days depending on order complexity. Express shipping options available for urgent requirements.
Custom sizing includes reducing tees and large-diameter 90° elbows beyond standard dimensions. Special material grades available upon request including alloy steel and stainless steel options. Engineering support assists with non-standard pressure ratings and temperature requirements. Technical drawings provided for approval before production.
Each fitting undergoes dimensional inspection using calibrated measuring equipment. Hydrostatic pressure testing verifies structural integrity at 1.5 times working pressure. Non-destructive testing includes ultrasonic wall thickness verification. Chemical analysis confirms material composition compliance. Final visual inspection ensures surface quality standards.

"We tested the elbows and reducers, their performance is very nice. We will make the new purchase plan for the warehouse."
"The tees are exactly in line with our requirement technically and competitive commercially."
"JS FITTINGS completed production ahead of schedule. The delivery arrived earlier than anticipated, keeping our project timeline on track."
"These pipe fittings have consistently performed well, standing up to rigorous project demands without any issues."
Q: Are your fittings made from seamless pipes or plates?
A: Our standard A234 WPB fittings are manufactured from seamless pipes. For extra-large diameters beyond 48", we offer welded fittings made from certified plates with 100% X-ray inspection.
Q: Do you supply fittings with special coatings?
A: Yes, besides standard anti-rust oil, we offer FBE, 3PE, and Hot-Dip Galvanizing to match your pipeline's corrosion protection requirements.
Q: What wall thicknesses are available?
A: We manufacture Schedule 10 through XXS wall thicknesses to match your pipe specifications.
Q: Can you provide mill test certificates?
A: Yes, complete material traceability documentation accompanies all shipments including chemical and mechanical test results.
Q: What is your minimum order quantity?
A: Minimum orders vary by size. contact us for specific quantity requirements and pricing.
Q: Do you offer expedited delivery?
A: Express production scheduling available for urgent projects with 7-15 day delivery possible.
Ready to source reliable Carbon Steel ASME B16.9 Buttweld Pipe Fittings? Contact admin@jsfittings.com for technical specifications and competitive pricing today.

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