Welding Neck Flange WN ASTM A182 Gr. F51 8" SCH 40S, 600# NACE MR0175/ ISO 15156

A182 F51 is the grade of duplex stainless steel forgings

The corresponding pipe and plate grades are S31803. In the standards of pipe SA312 and plate SA240, the hardness of S31803 is less than HB293. The so-called duplex stainless steel refers to the ferrite phase and austenite phase in their solid solution structure account for about half, generally less The content of dual-phase steel also needs to reach 30%.

In the case of low C content, the Cr content is 18%~28% and the Ni content is 3%~10%. Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N.

This type of steel has the characteristics of austenitic and ferritic stainless steel. Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, and has significantly improved intergranular corrosion resistance and welding performance, while maintaining iron. The 475°C brittleness and high thermal conductivity of plain stainless steel are characterized by superplasticity.

Compared with austenitic stainless steel, the strength is high and the resistance to intergranular side food and chloride stress corrosion is significantly improved. Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel-saving stainless steel. It is mainly used in the production of acid oil and gas wells.

Products range:

Difference between butt welding flange with neck and flat welding flange with neck

First, the welding form is different: the welding form of the flanged pipe with a neck is a fillet weld, and the welding weld form of the necked butt welding flange and the pipe is a circular weld;

1: Different materials: The flange material with neck flat welding is processed with thick ordinary steel plates as required, while the flange material with neck butt welding is mainly made of forged steel parts.

2: The nominal pressure is different: the nominal pressure of the neck-welded flange is 0.6 ~ 4.0MPa, and the nominal pressure of the neck-welded flange is 1 ~ 25MPa.

Second, the welds with neck butt welding flanges and pipes belong to category B welds, and the welds with neck flat weld flanges and pipe joints belong to category C welds, and the nondestructive testing after welding is different.
3: The neck flat welding flange and the neck butt welding flange cannot be replaced at will. In terms of manufacturing angle, the neck flat welding flange (SLIPON for short) is large, small in weight, and low in cost. In addition, butt welded flanges with a nominal diameter greater than 250 mm (WN is short for WELDINGNECK) should also be tested at low cost.

"Zheheng Steel" is a young diversified import and export enterprise in China, dedicated to providing high-end pipe fittings and solutions to the world, our factory (Zhejiang Kindly Pipe Fittings Company) is an old brand with more than 30 years of production experience , we have been able to independently provide reliable and e stainless steel and nickel alloy products to customers around the world. To achieve one-stop service from procurement-production-sales-after-sales. it is also positioned in the mid-to-high-end market. With strict quality requirements and perfect customer customization, more than 60% of the company's products have been sold to Northern Europe, North and South America, Taiwan, and about 40% since its establishment. Some products have been served by PetroChina, Sinopec, China National Nuclear Corporation.

The company has passed the ISO9001 certification of comprehensive quality management system, ISO14000 certification of environmental management system, OHSAS18000 certification of occupational ety and health management system; obtained special equipment manufacturing license [A1, A2 (1), B (2) level] , AD2000-W0 pressure equipment material certification of German TUV, PED 97/23 / EC EU pressure equipment material certification, Russian RTN and GOST certification; successively passed China (CCS), United States (ABS),

Germany (GL), Approved by the National Bureau of Shipping (LR), Norway (DNV), South Korea (KR) and other national classification societies.

"zheheng steel" produces and supply stainless steel 45 ° / 90 ° / 180 ° elbows, equal tees, reducer tees, crosses, concentric reducers, eccentric reducers, caps, flanges, flanges, etc., Non-standard pipe fittings are also produced according to customer requirements. The company strictly implements ASTM B16.9 / B16.5,ASTM A403 SH3408, SH3409, DIN2605, EN10253, BS1965, JISB2312 and other standards for production. The materials used are special steel materials such as 304H, 304L, 321H, 316L, 317L, 310S and duplex steel 2205/31803, 904L, WP347H, WP316Ti.

Available size range:

Outer diameter seamless (SMLS): 1/2 "-20", DN15-DN500, butt welding elbow (seam): 1/2 "-48", DN15-DN1200
Wall thickness: 1mm--60mm .SCH5S -SCHXXS

Material:
Stainless steel national grades: ASTM A403 WP304, 304L, 316, 316L, 321, etc.
European stainless steel grades: 1.4301, 1.4306, 1.4401, 1.4404, 1.4571

Duplex Steel:F51/S31803,F53/S32750,F55/S32760,F59/S32520,F60/S32205,254SMO/1.4547
Nickel Alloy: ASTM / ASME S / B366 UNS N08020 | N04400 | N06600 | N06625 | N08800 | N08810 | N08825 | N10276 | N10665 | N10675 | , Inconel 600 | Inconel 601 | Inconel 625 | Inconel 706 | Inconel 718 | Inconel X-750, Monel 400 | Monel 401 | Monel R 405 | Monel K 500

Production standard:
ASME / AISI B16.9, B16.28, ASTM A403, MSS SP-43: SA182, ASME.B16.11, EN / 1092
DIN 2605, DIN2609, DIN2615, DIN2616, JIS B2311, JISB2312, JISB2313, BS4504, BS4504, BS1560, BS10

Surface treatment: rolling sand, sand blasting, pickling,
Packing: wooden box, according to customer requirements
Minimum order: 1 piece
Delivery time: 1-45 days after receiving the deposit, depending on the quantity required.
Third party inspection: BV, SGS, etc. accepted
Test: direct reading spectrometer, hydraulic tester, X-ray detector, ultrasonic flaw detector, magnetic particle detector, etc.
Certificate: ISO9001. Pressure pipeline certificate, production license, PED, etc.
Productivity: 1800 tons per year
Products are widely used in papermaking, shipbuilding, petroleum, chemical, power, bioengineering, natural gas, sewage, construction, medicine, food (dairy) and other industries.