ASTM A358 Chav Kawm 2 EFW Welded Yeeb Nkab

A358 Class 2 welded yeeb nkab yog ib qho hluav taws xob fusion welded austenitic chromium-nickel alloy steel yeeb nkab siv rau corrosive lossis kub kub ib puag ncig. Nws ntiav ob-sided welding nrog cov hlau muab tub lim hauv txhua qhov kev sib txuas thiab tsis tas yuav tsum tau kuaj xyuas hluav taws xob.

A358 hluav taws xob fusion welded kav muaj nyob rau hauv plaub qib ntxiv: A358 Chav Kawm 1, A358 Chav Kawm 3, A358 Chav Kawm 4, thiab A358 Chav Kawm 5. Raws li lub npe nrov steel yeeb nkab xa khoom, GNEE Group tuaj yeem muab tag nrho cov welded kav rau koj. Peb txais tos koj cov lus nug.

A358 Cl2 EFW Stainless Hlau Yeeb Nkab Specification

Qhov ntev	8 "NB txog 110" NB nrog qhov loj me me
Thickness	SCH 10 txog SCH 160, thickness 3 hli mus rau 100 hli
Hom	hluav taws xob fusion, EFW
Loj	8" NB to 24" NB
Hom kawg	Plain kawg, beveled kawg, treaded thiab tiv thaiv lub hau yas
Ntim	steel strip bundles, yas wrapping bundles, ntoo crates, cardboard thawv
Chaw nres nkoj	Tianjin, Shanghai, Ningbo

ASTM A358 SS Class 2 EFW Yeeb Nkab Tolerances

NPS Designator	Permissible variations in Outside Diameter
	Tshaj Hauv.	Hauv qab.
1/8 rau 1-1/2, incl	1/64 (0.015)	1/32 (0.031)
Tshaj 1-1/2 rau 4, incl	1/32 (0.031)	1/32 (0.031)
Tshaj 4 txog 8, incl	1/16 (0.062)	1/32 (0.031)
Tshaj 8 mus rau 18, incl	3/23 (0.093)	1/32 (0.031)

A358 Class2 SS yeeb nkab

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A358 Class2 EFW Yeeb Nkab Vuam:

Welded pob qij txha yuav tsum yog tag nrho nkag mus pob qij txha, welded siv ob tog los yog ib sab welding txoj kev raws li tau hais tseg nyob rau hauv ASME Boiler thiab Pressure Vessel Code, Tshooj IX "Cov Lus Txhais." Txawm hais tias hom vuam sib txuas (ib leeg lossis ob sab), tus qauv no tsis qhia meej txog cov kev xav tau tshwj xeeb rau qhov zoo ntawm vuam seam. Thaum siv cov nplhaib rov qab los yog cov ntaub ntawv thaub qab, lawv cov khoom siv P-No. tus nqi (saib QW-22 hauv Tshooj X) yuav tsum zoo ib yam li cov hlau phaj tau koom nrog. Ua ntej ua ib qho kev soj ntsuam radiographic uas yuav tsum tau ua tom qab vuam, cov rings rov qab los yog cov ntaub ntawv thaub qab yuav tsum raug tshem tawm tag nrho, thiab cov npoo npoo npoo yuav tsum tau kuaj pom qhov muag kom ntseeg tau tias nws ua tau raws li qhov yuav tsum tau muaj ntawm ntu 6.2.3. Cov txheej txheem vuam uas tsis tshem cov nplhaib rov qab lossis cov hlua khi yog txwv. Cov txheej txheem vuam thiab vuam yuav tsum tsim nyog raws li ASME Boiler thiab Pressure Vessel Code, Tshooj IX.

Tshwj tsis yog tias tau teev tseg, tag nrho cov weld seams yuav tsum tau ua los ntawm cov hlau muab tub lim. Qhov saum npoo ntawm qhov vuam ntawm ob sab tuaj yeem yaug nrog cov khoom siv hauv paus lossis muaj qhov siab tshaj qhov siab tsis tshaj 1/8 nti (3 hli). Qhov siab ntawm ib qho weld reinforcement yuav txiav txim los ntawm cov chaw tsim khoom lossis kev pom zoo los ntawm cov chaw tsim khoom thiab cov neeg yuav khoom. Qhov kev txhawb zog yuav tsum yog tus du thiab tsis muaj qhov tsis sib xws. Cov hlau deposited yuav tsum uniformly fused rau saum npoo ntawm daim hlau. Tshwj tsis yog tias qhov kawg thickness ntawm cov hlau weld yog sib npaug los yog ntau tshaj qhov tsawg kawg nkaus thickness ntawm cov hlau nyob ib sab, concave weld nto tsis raug tso cai.

Weld defects yuav tsum tau muab tshem tawm kom txog thaum lub suab, tsis muaj cov hlau tsis xws luag tiav, thiab tom qab ntawd qhov chaw yuav tsum tau kho los ntawm vuam. Kev kho cua sov tom qab thiab kev tshuaj xyuas (kev pom, radiographic, thiab dye penetrant testing) yuav tsum tau ua raws li qhov yuav tsum tau ua ntawm cov khoom qub.

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