Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

Large carbon steel elbow forming technology

Large carbon steel elbow and elbow forming technology


Butt weld pipe elbow


Seamless(SMLS) : 1/2"-24" ,DN15-DN600

Butt Welded (seam) :24”-72",DN600-DN1800


LR 30,45,60,90,180 degree SR 30,45,60,90,180 degree

1.0D, 1.5D, 2.0D, 2.5D, 3D,4D,5D,6D,7D-40D.

pipe elbow fittings



API, CE, ISO9001 ,OHSAS18001


ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO


1) Carbon Steel: ASTM A234 WPB, ASTM A420 WPL9, WPHY-60

2) Stainless Steel: ASTM A403 WP304/304L, WP316/316L, WP321

3) Alloy Steel: ASTM A234 WP1, WP11, WP12, WP22, WP5, WP9, WP91

large carbon steel pipe elbow
Subject: Large Elbow mainly large carbon steel elbow processing technology molding technology
The main contents
Basic process is: First welding a polygonal cross-section or a polygonal ring shell closed at both ends of the multi-row fan shell, the internal pressure washed over the media, applying less pressure, including pressure from the polygonal cross-section under the action of becoming round, eventually becoming a circular ring shells. If necessary, a circular ring shell can be cut four or six 90 ○ 60 ○ elbow elbow elbow or other specifications, the process for the manufacture of medium diameter elbow with elbow diameter ratio greater than 1.5 in any specification large elbow, is ideal for manufacturing large pressure elbow method. Advantages mainly in the following aspects: (1) no billets as raw material savings pipe equipment and tooling costs, and arbitrarily large diameter and wall thickness can be obtained relatively thin elbow. (2) a flat plate or billet developable surfaces, thus cutting simple and easy to ensure accuracy, easy assembly and welding. (3) Because of the above two reasons, the manufacturing cycle can be shortened, the production cost is greatly reduced. Because does not require any special equipment, especially for on-site processing of large elbow. The technology has been applied for patent.
Technical Specifications
This technique is applicable to manufacturing work pressure is less than 10MPa, elbow diameter d? 125mm, diameter D and elbow elbow in diameter d ratio D / d? 1.5 Any elbow, and elbow in diameter size is unlimited. For example, can be processed elbow diameter of 12m, 60m above the elbow in the large diameter of the elbow.
Oil, gas, chemicals, utilities, construction and other industries boiler piping system. 

上一篇:carbon steel blind flange AND flange specifications

下一篇:42CrMo4 alloy steel pipe and chemical analysis

 Copyright (c)2012 LongtaidiIf you do not find the information you need, Click Here  Get Support

New Update Pipe List

Contact Us Online To Serve You Better

Hot Click PRO

    SCH 20 steel pipe parameters standard
    SCH 20 steel pipe parameters standard SCH 20 seamless steel pipe● SCH 20 seamless steel pipe Grade: 10 #● SCH 20 seamless steel pipe chemical composition:. sch 160 A53 A106 steel pipe
    sch 160 A53 A106 steel pipe,1.material:Astm a 53/106/ API 5LA/B,ST37,ST35.8;Standard:ASTM,DIN,JIS 2.ISO and SGS certificate. 2.5" inch steel pipe
    2.5" inch steel pipe.Standard:DIN17175,DIN1626,DIN2448,DIN17120,API 5L, API 5CT, ASTM A106, ASTM A53,ASTM A179,ASTM A210,ASTM A36,JISG3454,JISG3455,JISG3556,GOST8732,GOST8731Material:Gr. B, Gr. C; X42,X46,X52,X60,J55,K55,N80; st37,. Cold reduction of tube,Seamless Pipe cold-reducing
    Cold reduction of tube,Seamless Pipe cold-reducing.