304 stainless hlau luj tshib yog lub luj tshib ua los ntawm 304 cov khoom, 304 cov khoom yog ib hom stainless hlau, 304 stainless hlau yog qib stainless hlau ua raws li American ASTM tus qauv . 304 yog sib npaug rau Tuam Tshoj tus tshiab 30408, 0Cr19Ni10 qib thiab qub 0Cr18Ni9 qib stainless hlau. 304 muaj 19% chromium thiab 9% npib tsib xee. 304 stainless hlau yog siv dav siv nickel chromium stainless hlau, nrog zoo corrosion kuj, tshav kub tsis kam, kub tsis kam tiv thaiv txhua yam khoom, corrosion kuj nyob rau hauv huab cua, acid thiab alkali tsis kam. Nws yog ib qho ntawm cov khoom siv dav tshaj plaws hauv kev tsim cov yeeb nkab fittings. Lub luj tshib 304 stainless hlau yog cov yeeb nkab haum uas hloov cov kev taw qhia ntawm cov yeeb nkab hauv cov kav dej. Raws li lub kaum sab xis, muaj peb feem ntau siv 45 degree thiab 90 degree 180 degree, thiab lwm yam txawv txav lub luj tshib xws li 60 degree suav nrog raws li kev xav tau ntawm engineering. Txoj kev sib txuas ntawm lub luj tshib muaj xws li: ncaj pob tw weld, flange kev twb kev txuas, threaded kev twb kev txuas, thiab qhov (socket) txuas. Cov txheej txheem ntawm lub luj tshib tuaj yeem muab faib ua: vuam lub luj tshib, lub luj tshib swaging, thawb lub luj tshib.
Cov khoom siv feem ntau siv rau lub luj tshib stainless hlau yog: (304, 304L, 316, 316L, S30408, S30403, S31608, S31603, SUS304, ASTM A403, TP321, TP3171N6}, Cr19Ni10, 00Cr17Ni14Mo2, 1Cr18Ni9Ti, 06Cr17Ni12Mo2, 022Cr17Ni12Mo2, thiab lwm yam); Duplex Stainless Hlau: (F51, S31803, S2205, F53, 2507, S32750, F55, 2607, S32760, thiab lwm yam);
Stainless hlau 304 lub luj tshib tau muab faib raws li nws lub vojvoog ntawm curvature: nws tuaj yeem muab faib ua lub luj tshib ntev thiab lub luj tshib luv luv. Lub luj tshib ntev yog hais txog sab nraud ntawm lub raj uas nws lub vojvoog ntawm curvature sib npaug li 1.5 npaug, uas yog, R=1,5D. Lub luj tshib luv luv txhais tau hais tias nws lub vojvoog ntawm curvature yog sib npaug rau sab nraud ntawm lub raj, piv txwv li R=1.0D. (D yog txoj kab uas hla ntawm lub luj tshib, R yog lub vojvoog ntawm curvature). Raws li qib siab: muaj txog kaum xya hom, uas zoo ib yam li Asmeskas cov qauv yeeb nkab, suav nrog: Sch5s, Sch10s, Sch10, Sch20, Sch30, Sch40s, STD, Sch40, Sch60, Sch80s, XS; Sch80, Sch100, Sch120, Sch140, Sch160, XXS; Ntawm lawv, feem ntau siv yog STD thiab XS.
Tuam Tshoj Pipe Fittings Manufacturing Standards:
GB/T12459-2017 steel taub qab welded seamless yeeb nkab fittings
GB / T13401-2017 taub qab welded yeeb nkab fittings ua los ntawm steel phaj
SH/T3408-2012 steel taub qab welded seamless yeeb nkab fittings
SH/T3409-1996 taub qab welded yeeb nkab fittings ua los ntawm steel phaj
SH/T3410-2012 Forged Steel Socket Welded Pipe Fittings
GB/T10752-1995 Marine steel welded yeeb nkab
GB/T12772-1999 Yooj yim interface cam khwb cia hlau kav thiab fittings rau cov kua
American Pipe Fitting Manufacturing Standards:
ASME / ANSI B16.9 Lub Hoobkas Ua Seamless Steel Yeeb Nkab Lub Taub Hau Welded Yeeb Nkab Fittings
ASME / ANSI B16.11 Socket Welded thiab Threaded Yeeb Nkab Fittings
ASME / ANSI B16.28 Steel Butt-Weld Me Radius Luj Tshib thiab Tig Khoov
ASME / ANSI B16.5 Yeeb Nkab Flanges thiab Flange Fittings
MSS SP-43 Forged Stainless Hlau Butt Welded Yeeb Nkab Fittings
MSS SP-83 qhov (socket) vuam thiab ntsia hlau txuas
Integral reinforced hau MSS SP -97 rau qhov (socket) weld, threaded thiab taub qab weld xaus.
