Bend pipes are bent by using complete sets of bending equipment, which can be divided into two processes: cold simmering and hot pushing. No matter which kind of machine equipment and pipeline, most of them are used in elbow pipe, mainly for oil transmission, gas transmission, infusion, engineering bridge construction and so on.

Bend classification

1. Divided by material:

Carbon steel: ASTM/ASME A234 WPB, WPC

Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP911, 15Mo3 15CrMoV, 35CrMoV

Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Cryogenic steel: ASTM/ASME A402 WPL3-WPL 6

High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-chromium leaching, PVC, PPR, RFPP(reinforced polypropylene), etc.

Aluminum alloy 3003,6061, copper, copper, brass

2. The production method can be divided into pushing, pressing, forging, casting, etc.

3. According to the manufacturing standards, it can be divided into national standard, electric standard, ship standard, chemical standard, water standard, American standard, German standard, Japanese standard, Russian standard, etc.

4. According to its radius of curvature, it can be divided into long radius elbow and short radius elbow. Long radius elbow refers to its radius of curvature is equal to 1.5 times the outer diameter of the pipe, namely R=1.5D; A short radius elbow has a radius of curvature equal to the outer diameter of the pipe, i.e., R=1.0D. (D is elbow diameter, R is curvature radius).

5. If divided according to the pressure level: there are about 17 kinds, and the American pipe standard is the same, there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; The two most commonly used are STD and XS.

Cangzhou Shenlong Pipe specializes in the production of steel pipe and pipe fittings, including elbow, tee, reducer, etc., the product quality is guaranteed, can arrange SGS inspection, is the first choice for some large projects.