ASTM A420 is the standard specification for pipe fittings of carbon steel and alloy steel used for low temperature services. WPL6 is the most used grade material under A420.
Besides Grade WPL6, the standard also includes WPL9, WPL3, WPL8, impact test temperature correspondingly at -45℃, -75℃, -100℃, -195℃.
| Type | Pipe Fitting Elbow |
| Size | Seamless Elbow:1/2"~24" DN15~DN600
Welded Elbow: 1/2"~100" DN15~DN2500 |
| Wall thickness | sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100,
sch120, sch140, sch160, xxs, std,sch5s, sch20s, sch40s, sch80s |
| Standards | ANSI B16.9, ASME,DIN2506, JIS, BS,GOST |
| Material | Carbon steel: ASTM/ASME A234 WPB,WPC, ST37-2,ST54
Alloy steel: ASTM/ASME A234 WP9-WP12-WP11-WP22-WP5-WP91
Stainless steel: ASTM/ASME A403 WP 304-304L, WP 316-316L,WP 321,201 |
| Surface treatment | Transparent oil, rust-proof black oil or hot galvanized |
| Packing | wooden case, pallet or as customers' requirement |
| Applications | Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc |
| Min order | 10 piece |
| Delivery time | 7 after receipt of advanced payment |
| Certification | ASME, ISO9001:2000 |
| Delivery Term | FOB(30% down payment in advance, the balance before shipment)
CIF or C&F(30% in advance , the balance against with the copy of B/L) |
ASTM A420 Wpl6/Wp9/Wp11/Wp22 Carbon Steel Pipe Fitting Elbow Picture
ASTM A420 Wpl6/Wp9/Wp11/Wp22 Carbon Steel Pipe Fitting Elbow
ASTM A420 covers elbow, tee, reducer, cap, union and etc, which manufactured according to ASME B16.9, ASME B16.11, MSS SP-79 and MSS SP-95, types in seamless and welded structual pipe fittings. These fittings commonly used in pressure pipelines and pressure vessel/tanks at lower temperature.
ASTM A420 WPL6 pipe fittings compatible with ASTM A333 Grade 6 Pipe and ASTM A350 LF2 Class 1 Flange.
Manufacturing Methods for ASTM A420 Wpl6/Wp9/Wp11/Wp22 Carbon Steel Pipe Fitting Elbow
Forging or forming operations may be performed by hammer forging, press forging, perforating, extrusion, top forging, rolling, bending, welding or machining, or two or more methods at the same time. The molding process should ensure that no harmful defects on the fittings making.
Heat Treatment of ASTM A420 Wpl6/Wp9/Wp11/Wp22 Carbon Steel Pipe Fitting Elbow
Fittings under ASTM A420 shall be furnished in the normalized, normalized and tempered, annealed, or quenched and tempered condition. All welding shall be completed prior to the austenitizing heat treatment.
Chemical composition of ASTM A420 Wpl6/Wp9/Wp11/Wp22 Carbon Steel Pipe Fitting Elbow
| Grade | C | Mn | P | S | Si |
| WPL6 | 0.3 | 0.60-1.35 | 0.035 | 0.04 | 0.15-0.30 |
