ASTM A572 LSAW PIPE

ASTM A572 LSAW PIPE
Nqe lus piav qhia:Longitudinal submerged arc vuam yeeb nkab, SAWL PIPE, DSAW PIPE, EFW STEEL PIPE, Ncaj seam welded yeeb nkab,

Kub dov steel phaj
Txheem:ASTM A572 Cov Lus Qhia Tshwj Xeeb
Qib:GR.1, GR.2, GR.3

Loj:245-1420MM

Phab ntsa thickness:10-50MM

Ntev:12-12.2M

Chemical Element Cov ntsiab lus:

Qib 1:
- Cov pa roj carbon (C): 0 05-0.14%
- Manganese (Mn): 0 90-1.65%
- Phosphorus (P): 0.030% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0 15-0.40%
- Columbium (Cb) thiab/los yog Vanadium (V): 0.05-0.15%

Qib 2:
- Cov pa roj carbon (C): 0 05-0.16%
- Manganese (Mn): 0 60-1.65%
- Phosphorus (P): 0.030% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0 10-0.55%
- Columbium (Cb) thiab/los yog Vanadium (V): 0.05-0.15%

Qib 3:
- Cov pa roj carbon (C): 0 11-0.21%
- Manganese (Mn): 0 60-1.35%
- Phosphorus (P): 0.030% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0 15-0.40%
- Columbium (Cb) thiab/los yog Vanadium (V): 0.01-0.05%

Tag nrho peb qib ntawm ASTM A572 muaj lub zog siab tshaj plaws ntawm 50 ksi (345 MPa) thiab lub zog tensile yam tsawg kawg nkaus ntawm 65 ksi (450 MPa). Lawv feem ntau yog siv rau hauv cov khoom siv xws li cov tsev, txuas hniav, thiab tshuab. Cov ntsiab lus tshuaj lom neeg ntawm cov qib no tau ua tib zoo tswj los muab cov khoom siv kho tshuab uas xav tau thiab kom ntseeg tau tias cov hlau tuaj yeem tiv taus cov kev pabcuam npaj.

Txheej txheem txheej txheem:

1. Raw Material Inspection - Thawj kauj ruam yog los tshuaj xyuas qhov zoo ntawm cov khoom siv raw khoom siv rau kev tsim cov yeeb nkab. Qhov no suav nrog kev tshuaj xyuas cov tshuaj muaj pes tsawg leeg, lub cev lub cev, thiab tag nrho cov khoom zoo ntawm cov hlau.

2. Txiav thiab Beveling - Cov ntawv hlau yog ces txiav raws li qhov xav tau ntev thiab dav. Cov npoo ntawm daim hlau yog tom qab ntawd beveled kom ua tiav lub kaum sab xis rau vuam.

3. Kev sib sau - Cov phiajcim yog tsim rau hauv cov duab uas xav tau siv lub tshuab uas siv lub zog siab.

4. Vuam - Cov npoo ntawm daim hlau yog welded siv cov txheej txheem Longitudinal Submerged Arc Vuam (LSAW), uas yog siv cov xaim muab tub lim thiab cov roj tiv thaiv.

5. Kev kho cua sov - Cov yeeb nkab welded ces raug kho cua sov los txhim kho nws lub zog thiab kav ntev.

6. Kev Ua tiav - Cov kauj ruam kawg suav nrog kev ntxuav thiab tshuaj xyuas cov yeeb nkab rau txhua qhov tsis xws luag lossis tsis zoo. Cov yeeb nkab yog ces coated nrog Rust Preventative Oil (RPO) los yog lwm yam txheej tiv thaiv.

Qhov zoo:

1. Ua ntej, nws yog tsim los nrog lub zog siab dua thiab ua haujlwm ntev piv rau lwm hom kav dej, ua rau nws zoo tagnrho rau kev tuav cov khoom hnyav thiab kev siv siab. Qhov no ua kom cov yeeb nkab tiv taus hnav thiab tsim kua muag, txo qhov kev xav tau ntawm kev tu thiab hloov ntau zaus.

2. Qhov thib ob, ASTM A572 LSAW PIPE muaj nyob rau hauv ntau qhov ntau thiab tsawg, ua kom muaj ntau yam txaus siv rau ntau yam kev tsim kho. Txawm hais tias koj tab tom tsim cov kav dej, txuas hniav, lossis lwm yam kev lag luam, cov yeeb nkab no tuaj yeem tsim kho kom tau raws li koj cov kev xav tau tshwj xeeb.

3. Lwm qhov zoo ntawm ASTM A572 LSAW PIPE yog nws lub peev xwm los tiv thaiv corrosion, xeb, thiab lwm yam kev degradation. Qhov no ua kom cov yeeb nkab tuaj yeem tiv taus ib puag ncig hnyav thiab raug tshuaj lom neeg, ua kom lub neej ntev dua.

4. Tsis tas li ntawd, ASTM A572 LSAW PIPE yog qhov muaj txiaj ntsig zoo vim nws qhov kev teeb tsa qis, kev saib xyuas, thiab kho cov nqi ua rau nws muaj txiaj ntsig zoo rau ntau qhov kev tsim kho. Nws tseem tuaj yeem tsim tau yooj yim, txo cov sij hawm tsim khoom thiab cov nqi, txuag nyiaj rau cov tuam txhab tsim kho.

Daim ntawv thov:

ASTM A572 yog ib qho kev qhia tshwj xeeb rau cov hlau uas muaj zog tsawg-alloy. Cov qib sib txawv, suav nrog gr.1, gr.2, thiab gr.3 muaj ntau yam kev siv.

1. Ib qho kev siv ntawm ASTM A572 yog nyob rau hauv kev tsim kho uas nws yog siv rau hauv kev tsim vaj tse, txuas hniav, thiab lwm yam qauv. Lub zog thiab kav ntev ntawm cov hlau ua rau nws zoo tagnrho rau cov ntawv thov no, ua kom cov qauv kev nyab xeeb thiab siv tau ntev.

2. Lwm daim ntawv thov ntawm ASTM A572 yog nyob rau hauv kev tsim cov tshuab hnyav, xws li cranes thiab cov cuab yeej txav hauv ntiaj teb. Cov hlau muaj lub zog siab thiab tsis kam hnav thiab tsim kua muag ua rau nws zoo meej rau cov tshuab zoo li no.

3. Zuag qhia tag nrho, ASTM A572 gr.1, gr.2, thiab gr.3 qib muaj ntau yam kev siv thoob plaws ntau yam kev lag luam, suav nrog kev tsim kho, kev tsim khoom, thiab kev thauj mus los. Cov khoom siv hlau ua rau nws muaj kev ntseeg siab thiab muaj zog rau cov ntaub ntawv tseem ceeb, ua kom muaj kev ruaj ntseg thiab ruaj khov ntawm cov qauv thiab cov khoom siv uas tso siab rau nws.