Budget Price Carbon Steel Blind Flange Bulk Supply for Pipeline Maintenance and Testing

• Customization: Available
• Standard: ANSI, DIN, GB, JIS, GOST
• Type: Bolts
• Material: Stainless Steel
• Structure: Flanges
• Connection: Screws
• Sealing Surface: RF
• Manufacturing Way: Forging
• MOQ: 1 PCS
• Transport Package: Wooden Pallets
• Specification: φ 508— φ 1422mm
• Trademark: Customised
• Origin: China
• Production Capacity: 5000000 PCS
• Package Size: 100.00cm * 100.00cm * 100.00cm
• Package Gross Weight: 2000.000kg

Product Description

Product Description

Product Overview

A blind flange is a solid, disk-shaped flange used primarily to isolate or terminate a piping system. Unlike other flanges, it has no bore (center hole), making it ideal for sealing off the end of a pipe, valve, or pressure vessel nozzle. This allows for easy future expansion of the pipeline, safe maintenance, or pressure testing.

Category	Material Standard	Grade	Key Properties & Applications
Carbon Steel	ASTM A105	A105	Forged carbon steel for ambient and higher-temperature service.
	ASTM A350	LF2	Forged carbon/low-alloy steel for low-temperature service with good impact resistance.
	ASTM A36	A36	Used for rolled or forged ring blind flanges.
Stainless Steel	ASTM A182	F304/304L	Standard austenitic stainless steel for general corrosion resistance.
	ASTM A182	F316/316L	Superior corrosion resistance, particularly to chlorides and acids, due to molybdenum content.
	ASTM A182	F321	Stabilized with titanium for improved resistance to intergranular corrosion.
Alloy Steel	ASTM A182	F11, F22, F91	Chrome-molybdenum alloy steels for high-temperature & high-pressure service (e.g., power generation, petrochemical).
Governing Standard	Scope	Pressure Classes	Common Face Types
ASME B16.5	Dimensions, tolerances, and markings for flanges NPS ½" to 24".	150#, 300#, 600#, 900#, 1500#, 2500#	Raised Face (RF):Most common type.
ASME B16.47	Covers large-diameter flanges NPS 26" to 60" (Series A & B).	(Same as B16.5)	Flat Face (FF):For low-pressure applications.
MSS SP-44	Standard for Series A flanges under ASME B16.47.	(Same as B16.5)	Ring-Type Joint (RTJ):For very high-pressure and critical service.
API 605	Standard for Series B flanges under ASME B16.47.	(Same as B16.5)

Packing & Delivery

Packaging Standards:

Individual Protection: Each fitting and flange is wrapped with anti-rust material. Critical surfaces (e.g., bevels, threads) are covered with plastic caps or guards.
Internal Cushioning: Components are separated and cushioned using foam inserts or cardboard dividers to prevent contact damage.
Reinforced Packaging:

Standard orders: Securely bundled and strapped to wooden pallets with steel/PET bands.
Large/heavy items: Packed in custom-sized wooden crates or steel frames for maximum protection.
Weatherproofing: Waterproof film or tarpaulin lining inside all external packaging to resist moisture.
Clear Marking: Labels include product type (e.g., "90° Elbow", "Reducer"), size, material, quantity, and handling symbols.
Shipping Options:

Flexible Modes: Sea (FCL/LCL), air, or rail freight tailored to order urgency and volume.
End-to-End Tracking: Real-time shipment status provided for visibility.
Complete Documentation: Commercial invoice, packing list, and certificate of origin supplied for efficient customs clearance.
Our Commitment:
We ensure your piping products (including elbows, tees, reducers, and flanges) arrive intact and on schedule. Custom packaging and logistics solutions are available upon request.

Company Profile

Cangzhou Hongding Pipe Industry Co.,Ltd

Established in 1997, HD STEEL GROUP is strategically situated in Yanshan industrial zone, Cangzhou City, Hebei Province, renowned as the 'Pipe Fitting Capital'. Our group is engaged in a diverse range of activities, with a specialization in the manufacturing of pipe fittings, flanges, anti-corrosion line pipes, steel inventory management, as well as domestic and international sales operations. We are dedicated to offering comprehensive one-stop solutions for steel pipe products to a global clientele. Boastingstate-of-the-art technology in the R&D and production of steel pipe fittings and flanges, which is at the forefront both domestically and internationally, we are also equipped with advanced and comprehensive testing facilities. Our on-site management is stringently implemented in strict compliance with the international standard quality management system(API, ASME, ANSI, EN, DIN, JIS, GOST, GB/T, ISO, etc. Our products have successfully passed the inspections and obtained approvals from esteemed international authoritative third-party organizations, namely SGS, BV, MOODY, and TUBOSCOPE.

FAQ

Q: What's the lead time for orders?
A: Standard products ship in 15–30 days; customized units require 30–45 days.
 
Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.
 
Q: Can I request a customized size?
A: Absolutely! We offer detail drawings of customized size.
 
Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).
 
Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.