SW Socket Weld Flanges

TYPE: RF, FF, RTJ, M&F, T&G. Material: A105, A350 LF2, A36, SS 400, A182 F11/F304/F316/F51/F53/F55 etc. Size: 1/2" ~ 60" Standard: ASME B16.5/B16.36/B16.47, API 6B/605, BS 3293/4504, EN 1092-1, JIS B2220, MSS SP-44 Pressure: CLASS 150 ~ CLASS 2500, PN 6 ~ PN 400 Flange Facing: RF, FF, RTJ, M&F, T&G. Customization: OEM/ODM service. Samples: Sample service available.

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Product Description

Xi 'An QinSteel Trading Co., Ltd | High-Performance SW Socket Weld Flanges Manufacturer & Global Supplier

When you need reliable connections for high-pressure piping systems, SW Socket Weld Flanges offer unmatched durability and precision. Designed to meet ASME B16.5, API 6A, and EN 1092-1 standards, our flanges ensure leak-proof performance in critical oil, gas, and industrial applications. With sizes ranging from ½" to 60" and pressure ratings up to CLASS 2500, they’re engineered to handle extreme conditions while maintaining structural integrity.

Material Specifications

STANDARD	TYPE	SIZE	PRESSURE
ASME B16.5	WN, SO, SW, BLD, THREADED, LP	1/2" ~ 24"	CLASS 150 ~ 2500
ASME B16.36	WN, SO, THREADED	1/2" ~ 24"	CLASS 300LB ~ 2500
ASME B16.47	WN BLD	26" ~ 60"	CLASS 75 ~ 900
ASME B16.48	SPECTACLE BLANKS, SPADES, RING SPACERS	1/2" ~ 24"	CLASS 150 ~ 2500
AWWA C207	STEEL RING, BLD, STEEL HUB	4" ~ 96"	86 ~ 275 PSI
API 6A	WN, BLD, THREADED, INTEGRAL, TEST	2-1/16" ~ 20-3/4"	13.8 MPa ~ 138.0 MPa
API 605	WN	26" ~ 60"	CLASS 150 ~ 900
SANS 1123	WN, PLATE, SCREWED, SO, LOOSE, BLANK, INTEGRAL	DN 10 ~ 3600	250 ~ 4000 kPa
AS 2129	BLD, PLATE, BOSS, WN	DN 15 ~ 1800	TABLE A ~ TABLE T
BS 3293	SO, WN	26" ~ 48"	CLASS 150 ~ 600
BS 4504	PLATE, LOOSE, BLANK, WN, SO, THREADED, WO PLATE, INTEGRAL	DN 10 ~ 4000	PN 6 ~ 40
EN 1092-1	PLATE, LOOSE, BLIND, WN, SO, THREADED, WO PLATE, INTEGRAL	DN 10 ~ 3600	PN 6 ~ 400
JIS B2220	SOP, SOH, SW, WN, LJ, TR, IT, BL	DN 10 ~ 1500	5 ~ 63 K
MSS SP-44	BLD, WN	12" ~ 60"	CLASS 150,19.6bar ~ CLASS 900, 153.1 bar

Material Excellence

Our SW Socket Weld Flanges are crafted from ASTM A105 carbon steel, A350 LF2 for low-temperature environments, and corrosion-resistant alloys like A182 F304/F316. Whether your project requires standard or exotic materials (e.g., Duplex, Inconel), we ensure compliance with global standards like BS 4504 and JIS B2220.

Why Our SW Socket Weld Flanges Stand Out？

1. Precision Engineering: Machined to ±0.1mm tolerances for perfect alignment and reduced turbulence.

2. High-Pressure Resilience: Tested up to 1.5x rated pressure to guarantee leak-free operation.

3. Custom Solutions: Modify dimensions, coatings, or materials to fit unique project needs.

Trusted Applications

Oil and gas pipelines
Petrochemical refineries
Power generation plants
Hydraulic systems requiring CLASS 900+ ratings

Why Choose QinSteel?

✅ GMP-Certified Production: Every flange undergoes 100% dimensional checks and NDT testing.

✅ Global Compliance: API 6A, PED, and ADNOC certifications included.

✅ Rapid Delivery: 70% of orders ship within 48 hours, even for bulk requests.

Quality Assurance

We perform:

Material traceability via mill test reports
Ultrasonic testing (UT) for weld integrity
PMI verification to confirm alloy composition

Secure Global Shipping

Flanges are coated with anti-corrosion solutions and packed in steel-reinforced crates. We offer EXW, FOB, or DDP terms to simplify logistics.

Quality Control

Factory Equipment

Shipping Packaging

FAQs

Q: Do your products meet API 6A for sour service?

A: Absolutely. We provide NACE MR0175-compliant options for harsh environments.

Q: Can you customize flanges for non-standard sizes?

A: Yes! Our R&D team delivers OEM solutions in 3–5 weeks.

Q: How do you ensure defect-free products?

A: Every batch undergoes UT, RT, and hydrostatic testing before shipment.

Contact Us

Need a quote or technical support for SW Socket Weld Flanges? Contact us at info@sxqinsteel.com for fast, personalized service.