Seamless carbon steel pipe elbow
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Seamless carbon steel elbow Seamless elbow pipe because of the manufacturing process is Pided into two kinds of seamless hot-rolled (extrusion) elbow pipe and cold drawn (rolled) seamless elbow fittings. Cold drawn (rolled) tube circular tube shaped tube is Pided into two kinds. Now the process is simple, as follows:
Pipe elbow
1)OD:1/2''-48''
2)WT:SCH10-SCH160
3)Material:A234 WPB, WPC, A105..
4)ISO9001
Carbon Steel Pipe Elbow
2)Model:DN15-DN1200
3)Material:carbon steel , alloy steel , stainless
4)Type : seamless and weld ; 30 degree , 45degree , 90degree
5)Min Quantity : 10 pcs
6)Supply ability : 850 tons/month
7)Certificates : ISO9001/2000 , MTC ,SGS ,BV
8) Country of origin : China
| Type | Elbow |
| OD | 1/2"-48" |
| WT | SCH10-SCH160 |
| Standard | ASME, GB, DIN, JIS |
| Material | A234 WPB, A420 WPL6,MSS SP75WPHY52-WPHY70,A234 WP5, WP9, WP11, |
| WP12, WP22, WP91, A403 WP304(H),WP304L,WP316(H),WP316L,WP321 | |
| Packaging | wooden cases or Customized packing available |
| Application | Petroleum, Chemical, Power, Gas, Metallurgy, Shipbuilding, Construction etc |
| Others |
Special design available according to your request |
Cold drawn (rolled) seamless elbow Black steel pipe elbow: tube round → heating → perforation → Heading → annealing → pickling → oiled (copper) → multi-pass cold drawn (cold rolled) → blank tube → heat treatment → straightening → hydrostatic testing (testing) → mark → storage.
Hot-rolled (extruded seamless elbow pipe fittings): tube round → heating → perforation → three-roll cross rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → straightening → water pressure test (or testing) → mark → storage
The raw material is rolled seamless elbow tube round tube embryo to go through a cutting machine cutting growth of about one meter blank, and sent by conveyor furnace heating. The billet is fed into the heating furnace, the temperature is about 1200 degrees Celsius. Fuel for hydrogen or acetylene. The furnace temperature control is a key issue. The tube round baked to wear empty after pressure puncher. Generally more common punch tapered roller punch, high this puncher production efficiency, product quality, perforated large flaring can wear a variety of pipe fittings. Perforated tube round has been a three-roll cross rolling, rolling or extrusion. Squeeze detached sizing. Sizing mill through the cone drill bit high speed rotation Billet punch to form a pipe. Tube length of the outside diameter of the drill bit diameter sizing mill.
Carbon steel seamless elbow after sizing, cooling tower, water spray cooling, pipe fittings, after cooling, it is necessary to be straightened. Fittings was sent by the conveyor belt after straightening metal detection machine (or hydrostatic test) internal testing. If the steel pipe internal cracks, bubbles, etc., will be detected. Seamless elbow fittings go through a strict hand pick quality inspection. Seamless elbow quality inspection, paint sprayed on the number, specifications, production batch. Seamless elbow by crane hanging into the warehouse.
