Before pipe welding, pipe is formed in round shape passing through sèries of driven and idler rollers of forming section. In welding section pipe is longitudinally welded by using high frequency induction welding method. Outside bead es removeu i formeu in shape of scrap. Les semades són ironades i enfilades passades mitjançant cooling section.Nota:(1)I valori nella tabella son adatti per il campione standard a grandezza naturale.
| Standard | Grau | Mínim transversal impatt del cos del tub | Mínim transversal impatto della saldatura (J) | |||||
| (J) | ||||||||
| D Less than or equal to 508 | 508mm | 762mm | 914mm | 1219mm | 1422mm | 1422mm | ||
| API 5L SPEC | Less than or equal to L415×60 | 27(20) | 27(20) | 40(30) | 40(30) | 40(30) | 27(20) | 40(30) |
| >L415×60 | 27(20) | 27(20) | 40(30) | 40(30) | 54(40) | 27(20) | 40(30) | |
| Less than or equal to L450×65 | ||||||||
| >L450×65 | 27(20) | 27(20) | 40(30) | 40(30) | 54(40) | 27(20) | 40(30) | |
| Less than or equal to L485×70 | ||||||||
| >L485×70 | 40(30) | 40(30) | 40(30) | 40(30) | 54(40) | 27(20) | 40(30) | |
| Less than or equal to L555×80 | ||||||||
Etiquetes populars: tub erw, subministrador, personalitzat, a l'engròs, barat, descompte, llista de preus, preu baix, al magatzem, mostrari gratis
Un parell de: Barres rodones d'acer
Següent: Canonada Ssaw
