Ring Joint Face Flanges

TYPE: Welding Neck, Slio-On, Socket Welding, Blind, Threaded，Lapped, Spectacle Blind Flange, Orifice Flanges. Material: A105, A105N. Size: 1/2"~60" (DN15-DN1500) Pressure: 150lb~2500lb Thickness: Sch5s/10s/40s/Std/60/80/xs/120/160/xxs. Flange Facing: RTJ Standard: ASME B16.5/B16.36/B16.47/B16.48, AWWA C207, API 6A/605, AS 2129, BS 3293/4504, EN1092-1, JIS B2220. MS SP-44 Customization: OEM/ODM service Samples: Sample service available

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Product Description

Premium Ring Joint Face Flanges for High-Pressure Sealing Solutions

Xi 'An QinSteel Trading Co., Ltd is a trusted manufacturer and global supplier of precision-engineered Ring Joint Face Flanges designed for critical applications in oil, gas, and petrochemical industries. Our flanges meet ASME B16.5, API 6A, and EN 1092-1 standards, ensuring leak-proof performance in extreme-pressure environments. With GMP-certified production and a large inventory, we deliver reliable solutions tailored to your project needs.

Product Overview

The products (RTJ Flanges) feature precision-machined grooves that create a metal-to-metal seal using oval or octagonal gaskets. Ideal for pipelines, wellheads, and compression stations, these flanges excel in high-temperature and high-pressure conditions up to 2500lb. Available in Welding Neck, Slip-On, Blind, and Threaded types, they support sizes from ½" to 60" (DN15–DN1500) in ASTM A105, stainless steel, and alloy materials.

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

ASTM A105 Carbon Steel: Optimal for general high-pressure systems.
A182 F304/F316 Stainless Steel: Resists corrosion in acidic or marine environments.
A350 LF2: Built for subzero temperatures (-46°C).

Why Our Ring Joint Face Flanges Stand Out?

✅ Global Compliance: ASME, API, ISO, and PED certifications for universal acceptance.

✅ Sour Service Ready: NACE MR0175-certified options for H2S-rich environments.

✅ Custom Solutions: OEM/ODM support for non-standard sizes/groove profiles.

✅ Rapid Delivery: 30%+ pre-machined stock for urgent orders.

Applications

Offshore drilling rigs and subsea pipelines.
Refinery manifolds and gas compression units.
High-pressure steam lines and chemical processing.

Why Choose QinSteel?

GMP-Certified Facilities: Zero-defect production with full material traceability.
Global Warehouses: Fast shipping from hubs in Houston, Dubai, and Rotterdam.
24/7 Engineering Support: Assistance with installation and leak testing.