ASME B16.5 Blind Flanges

TYPE: BLIND FLANGE. Material: A105, A350 LF2, A36, Q235, S235JR, A182 F304/F304H/F316/F310/F316Ti/F321/F347/F44/F53/F55,F904L, UNS 31803 etc. Size: 1/2"~24" Pressure: CLASS 150 ~ CLASS 2500 Flange Facing: RF, FF, RTJ, M&F, T&G. Standard: ASME B16.5 Customization: OEM/ODM service Samples: Sample service available

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Product Description

ASME B16.5 Blind Flanges Manufacturer | Xi 'An QinSteel Trading Co., Ltd

Xi 'An QinSteel Trading Co., Ltd delivers precision-engineered ASME B16.5 Blind Flanges for high-pressure pipeline isolation. With over 25 years of expertise, we supply bulk orders globally, backed by ASME-certified manufacturing and rapid lead times. Our flanges meet rigorous standards for oil & gas, petrochemical, and power generation projects, ensuring leak-proof performance even in extreme conditions.

Product Description

The products are critical components designed to seal pipeline ends, vessel openings, or pressure system terminations. Engineered for durability, these flanges offer high-pressure resistance (Class 150–2500) and come in sizes from ½" to 24". They’re ideal for temporary maintenance or permanent installations across industries requiring strict adherence to ASME standards.

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	DN15 ~ 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 Options

Choose from:

Carbon Steel: ASTM A105, A350 LF2 (low-temperature service)
Stainless Steel: A182 F304/F316, duplex grades (F51/F53)
Custom Alloys: Nickel-based, UNS 31803, or corrosion-resistant coatings

Why Our ASME B16.5 Blind Flanges Stand Out?

✅ Global Compliance: ISO 9001, PED, CE, and API 6A certifications included.

✅ Precision Manufacturing: CNC-machined surfaces for perfect gasket alignment.

✅ Rapid Delivery: 10,000+ units in stock for urgent orders.

✅ Custom Solutions: OEM support for unique dimensions, materials, or facings (RF, RTJ, etc.).

Applications

Isolating pipelines during maintenance in oil refineries
Sealing high-pressure vessels in chemical processing plants
Terminating offshore rig piping systems

Trusted by Global Engineering Teams

25+ Years of Expertise

Our ASME-certified facility combines advanced CNC machining with strict quality protocols. Every flange undergoes hydrostatic testing and dimensional checks to ensure zero defects for ASME B16.5 Blind Flanges.

Bulk Order Ready

With a 10,000+ unit inventory, we ship bulk orders within 7–15 days—ideal for tight project timelines.

End-to-End Support

From material selection to logistics, our engineers guide you through compliance, installation, and documentation.

Quality Control

Factory Equipment

Shipping Packaging

FAQs

Q: Do your products comply with EU pressure directives?

A: Yes. All flanges meet PED 2014/68/EU and CE standards for European projects.

Q: Can I order small quantities for plant maintenance?

A: Absolutely. We offer flexible MOQs with volume-based pricing.

Q: How are flanges protected during shipping?

A: We use anti-corrosion coatings and reinforced wooden crates for damage-free delivery.

Q: Do you provide material traceability?

A: Yes. Mill test certificates (MTCs) and NDT reports are available upon request.

Contact Us

Email: info@sxqinsteel.com

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Optimized for durability, compliance, and fast delivery—ASME B16.5 Blind Flanges from Xi 'An QinSteel are engineered to keep your systems securely sealed.