Large diameter elbow is 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 304-304-304l-304lln -304n

ASTM/ASME A403 WP 316-316 l - 316 - h - 316 ln - 316 - n - 316 ti

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

Low temperature 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 - coated, PVC, PPR, RFPP (enhanced polypropylene) etc.

It can be divided into push, pressing, forging, casting and so on.

The standards can be divided into the national standard, the electric standard, the ship standard, the scale, the water standard, the beauty standard, the German standard, the daily standard, the Russian standard and so on.

According to the radius of curvature of large diameter elbow, it can be divided into long radius elbow and short radius elbow. The radius of the long radius is the diameter of the tube which is 1.5 times the radius of the tube, namely R= 1.5d; The radius of curvature of the short radius is equal to the diameter of the tube, which is R= 1.0d. (D is the diameter of the bend, R is the radius of curvature).

According to the pressure grade: about 17, the same as the American pipe standard, there are: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, SCH100, Sch120, Sch140, Sch160, XXS; One of them is STD and XS.

Shape according to the different purpose can be divided into: the groove Angle, card sets of bend, bend, flange, elbow, reducing elbow, stay inside and outside bend, bend and stamping elbow, elbow push system, socket bend, wire butt welding elbow, bend, etc.