300LBS Annealed Forged Steel Flange Bright Smooth Surface 125-250 RMS / 3.2-6.3µM

ASTM A182 ASME B16.5 300LBS forged stainless steel blind flange

Vanforge holds a large stock of ANSI/ASME flanges in various types of stainless steels. Our program of stainless ANSI/ASME flanges covers the following materials:

• Austenitic stainless steels: ASTM 304/304L and ASTM 316/316L
• Duplex stainless steel: UNS S31803 / EN 1.4462
• Super-duplex stainless steel: UNS S32750 / EN 1.4410

Standard specification for ANSI/ASME flanges from stock

Flanges, forged, ASTM A182, F304/304L or F316/316L (dual marked and certified), ASME B16.5, annealed and fully machined, raised face, smooth finish (125-250 RMS / 3.2-6.3µM) to MSS-SP6, hardness to NACE MR0175 latest edition. IC checked to ASTM A262 E and PMI tested.

Vanforge's ANSI/ASME flanges are certified according to EN 10204/3.1.

Stainless steel blind flange, 300LBS

Technical date:

ASTM A182, ASME B16.5

Raised face, smooth finish (125-250 RMS / 3.2-6.3 µm)

Product code example:

FFB-304L-6-300

Production facilities:

Suzhou Vanforge Metals Co., Ltd. was set up in April 1999 with a registered capital of 230 million Yuan in Zhangjiagang Bonded Area in Jiangsu Province of China. It has developed to be an important R&D and manufacture enterprise of high performance stainless steels and nickel alloys.

Vanforge is a high-tech enterprise with 70 national patents, it has its own Special Alloy Research Center, academician workstation and post doctorate innovation practice base. Vanforge has been certificated the national laboratory accreditation of ISO/IEC 17025, and ISO9001, ISO14001, OHSAS18001, API Q1, IATF16949, GB/T23331, TUV, CCS, DNV, LR, ABS.

Vanforge has the international advanced special smelting capacity, including the German ALD 6t vacuum induction furnace, 6t consumable electrode vacuum furnace, 18t drawing-ingot protective atmosphere electroslag furnace and 1t vacuum induction furnace, 3t electroslag furnace, 18t drawing-hollow ingot electroslag furnace, and 2# Purification Furnace/1# Purification Furnace/LF/AOD/VOD refining production line, 25MN/8MN fast forging machine, 450/320 rolling mill, etc.

The current annual production capacity of Vanforge is 120,000 tons, and the main products are high-grade special alloy materials, including high temperature alloy, corrosion resistant alloy, precision alloy, ultra high strength steel, special stainless steel, high-grade tool and mould steel, steam turbine blades steel, gas turbine steel, ultra-supercritical materials, etc., which are widely used in aviation, aerospace, ship, petrochemical, nuclear power, electronics, steam turbine, high-speed rail, machinery manufacturing, and other fields; besides, we can organize the research and development and production of new materials according to customer demand for new materials. Vanforge has now become a qualified supplier of domestic high-end equipment manufacturing enterprises, such as CASIC, CGN, CRRC, CFHI, Wujin Stainless, Zhejiang Jiuli Hi-Tech Metals Co., Ltd., Xinxing Ductile Iron Pipe Co., Ltd., etc.

We always adhere to the concept of quality first, integrity based, scientific and technological innovation, making progress, and wholeheartedly serving customer and devote ourselves to becoming the well-known supplier of key basic materials of world’s high-end equipment manufacturing industry.

We supply following products in the forms of wires, bars, plates

(Super) austenitic stainless steels

(Super) duplex stainless steels

(Supper) Ferritic stainless steels

Precipitation hardening stainless steels

Incoloy alloys

Inconel alloys

Monel alloys

Hastelloy alloys

As well as following steel products

Gear steels

Bearing steels

Spring steels

Drilling tool steels

Free-cutting steels

Anchor steels, mooring chain steels

Mining chain steels

Die steels, Mold steels, tool steels

Structural steels

Antiwear steels

Offshore structure steels

Petroleum storage tank steels