1 .Kev taw qhia luv luv ntawm cov qauv yeeb nkab

Seamless yeeb nkab rau cov qauv (GB / T8162-2008) yog siv rau cov qauv dav dav thiab cov qauv ntawm cov yeeb nkab seamless.Seamless steel raj muab faib ua ntau hom kev siv sib txawv.

Stainless hlau seamless yeeb nkab rau cov qauv (GB / T14975-2002) yog kub-dov (extruded, nthuav) thiab txias-draw (dov) seamless yeeb nkab ua los ntawm stainless hlau siv nyob rau hauv tshuaj, roj av, textile, kev kho mob, khoom noj khoom haus, machinery thiab lwm yam kev lag luam, cov kav dej corrosion-resistant thiab cov khoom siv thiab cov khoom siv.

GB / T8162-2008 (seamless yeeb nkab rau cov qauv) feem ntau yog siv rau cov qauv dav dav thiab cov qauv siv tshuab.Nws cov khoom siv (hom): carbon steel 20, 45 steel, Q235, alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo , 42CrMo thiab lwm yam.

Seamless steel yeeb nkab

Vim tias nws cov txheej txheem tsim khoom sib txawv, nws tau muab faib ua kub dov (extruded) seamless steel raj thiab txias kos (dov) seamless steel raj ob hom.Cold-drawn (dov) yeeb nkab yog muab faib ua cov yeeb nkab thiab cov yeeb nkab tshwj xeeb ob hom.

A. Txheej txheem cej luam ntawm cov txheej txheem ntws

Kub dov (extruded seamless steel raj): round tube billet → cua sov → perforation → peb-yob cross dov, nruam dov los yog extrusion → raj stripping → sizing (los yog txo) → txias → blank raj → straightening → dej siab kuaj (los yog tsis xws luag nrhiav) → cim → cia.

Cold drawing (rolling) seamless steel tube: round tube billet → cua sov → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass txias drawing (txias dov) → blank tube → heat treatment → straightening → water pressure test (Kev kuaj pom qhov tsis haum) → kos npe → khaws cia.

2. Cov qauv

1, GB: seamless steel raj rau cov qauv: GB8162-2008 2, seamless steel raj rau conveying kua: GB8163-2008 3, seamless steel raj rau boiler: GB3087-2008 4, siab seamless raj rau boiler: 5, tshuaj chiv khoom rau kev kub siab seamless steel yeeb nkab: GB6479-2000 6, geological drilling rau seamless steel yeeb nkab: YB235-70 7, roj drilling rau seamless steel yeeb nkab: YB528-65 8, roj av tawg seamless steel yeeb nkab: 10. Seamless steel yeeb nkab rau tsheb semi-ncej: GB3088-1999 11. Seamless steel yeeb nkab rau nkoj: GB5312-1999 12.13, txhua yam hlau hlau raj 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 14 Cr15 Cr, 20GV,

Tsis tas li ntawd, kuj tseem muaj GB / T17396-2009 (kub-dov seamless steel raj rau hydraulic prop), GB3093-1986 (high-pressure seamless steel raj rau diesel cav), GB / T3639-1983 (txias-kos lossis txias- dov precision seamless steel raj), GB / T3094-1986 (Cold-drawn seamless steel hlab, tshwj xeeb-zoo li tus steel leeg), GB / T8713-1988 (seamless steel hlab nrog precision puab txoj kab uas hla rau hydraulic thiab pneumatic thooj voos kheej kheej), GB13296-1991 (seamless stainless hlau raj rau boilers thiab kub exchangers), GB / T14975-1994 (seamless stainless hlau raj rau kev siv), GB / T14976-1994 (Seamless stainless hlau raj nrog precision puab kab rau hydraulic thiab pneumatic thooj voos kheej kheej) Seamless stainless hlau Cov raj dej rau kev thauj mus los GB / T5035-1993 (seamless steel raj rau tsheb qag bushing), API SPEC5CT-1999 (kev qhia tshwj xeeb rau casing thiab tubing), thiab lwm yam.

2, Asmeskas tus qauv: ASTM A53 - ASME SA53 - Boiler thiab Pressure Vessel code loj qib qib lossis steel chav kawm: A53A, A53B, SA53A, SA53B

Seamless raj lub cev nyhav: [(sab nraud txoj kab uas hla - phab ntsa thickness) * phab ntsa thickness] * 0.02466 = kg / m (qhov hnyav ib meter)