Khoom: ASTM A333 Gr. 6 LTCS ERW Pipe
Txuj: ASTM A333 / ASME SA333
Qib: Qib 6 (Tsuas Kub Carbon Steel)
Txheej Txheem: Hluav taws xob tiv thaiv Welded (ERW)
Daim ntawv thov: Tsim los rau qis -kub dej kev pab cuam mus rau -46℃(-50℃F).
Daim ntawv pov thawj: Guaranteed impact tested (Charpy V-notch) kom ntseeg tau tias tus cwj pwm zoo nyob rau hauv ib puag ncig cryogenic. Haum rau LPG, LNG, thiab tshuaj ua cov nroj tsuag.

* Ceeb Toom: Ib txwm ua kom daim ntawv pov thawj Mill Test (MTC) kom meej meej qhia qhov cuam tshuam rau qhov kev xeem ntawm -46 degree, vim qhov no yog cov pov thawj tsis zoo rau cov khoom siv no.

"ERW" (Electric Resistance Vuam)

Txheej txheem tsim khoom:

1.Raw Material:Ib qho kub -rolled steel kauj (tshwj xeeb A333 Gr. 6 chemistry) yog uncoiled thiab hlais mus rau qhov dav xav tau.

2. Kev tsim kho:Lub tiaj tiaj yog dhau los ntawm kev sib sau ua cov menyuam kom txias - ua rau hauv ib lub cylindrical zoo, tsim lub "qhib seam" raj.

3. vuam:Cov npoo ntawm lub raj yog rhuab sivsiab - zaus hluav taws xob tsis kam. Cov npoo yog nias ua ke nyob rau hauv siab los tsim ib daim ntawv cog lus.Tsis siv cov khoom siv fillerhauv cov txheej txheem no.

4.Sizing & soj ntsuam:Lub vuam seam yog cua sov- kho kom zoo dua cov qauv nplej (tseem ceeb rau qis- qhov kub thiab txias), thiab cov yeeb nkab yog qhov loj me, txiav, thiab raug rau qhov tsis yog- kuaj kev puas tsuaj (NDT) xws li ultrasonic lossis hydrostatic kuaj.

ERW vs. Seamless:

ERW feem ntau yog tus nqi ntau dua- ua haujlwm tau zoo thiab muaj qhov ua tau zoo dua qub (cov phab ntsa tuab thiab qhov sib npaug) piv rau cov kav dej seamless-6.

Rau A333 Gr. 6, ob qho tib si kev tsim khoom tau txais los ntawm tus qauv, yog tias lawv dhau qhov kev ntsuas tib yam thiab cuam tshuam.

ASTM A333 Qib 6 yog dab tsi?

ASTM A333 Qib 6 yog tus qauv qhia tshwj xeeb rau Seamless thiab Welded Steel Yeeb Nkab rau qis-Tsub Pabcuam. Nws feem ntau hu ua LTCS (Low-Temperature Carbon Steel).

Tsis zoo li cov qauv carbon steel (xws li ASTM A106 Gr. B), uas dhau los ua nkig hauv cov dej khov, A333 Gr. 6 tshwj xeeb yog tsim los tswj kom muaj zog toughness thiab cuam tshuam ntawm qhov kub thiab txias li -46℃(-50℃F).

Key Defining Feature:

Charpy V-Ntch Impact Testing: Qhov no yog qhov yuav tsum tau ua rau qib no. Cov khoom siv yuav tsum nqus qhov nruab nrab ntawm 18 Joules (13 ft-lbs) ntawm -46 degree, ua pov thawj tias nws yuav tsis tawg nyob rau hauv qhov kub thiab txias.

A. Chemical Composition (Kev Ntsuas Kub)

Lub ntsiab	Kev xav tau (max)	Sau ntawv
Cov pa roj carbon (C)	0.003	Tswj rau weldability.
Manganese (Mn)	0.29 – 1.06%	Muab lub zog thiab toughness.
Phosphorus (P)	0.00025	Kev txwv nruj - Tsawg dua li cov qauv hlau kom khaws cia qis - qhov kub thiab txias ntawm cov khoom.
Sulfur (S)	0.00025	Kev txwv nruj - Tsawg kawg los tiv thaiv embrittlement.
Silicon (Si)	0.10% min	Deoxidizer (tua hlau).

B. Mechanical Properties

Khoom	Tus nqi
Tensile zog	Min 415 MPa (60,000 psi)
Yield zog	Min 240 MPa (35,000 psi)
Elongation	Tsawg kawg 30% (Longitudinal)

Daim Ntawv Thov & Lub Hom Phiaj Kev Lag Luam

1.Oil & Gas (Upstream / Midstream):Thauj LPG (Liquefied Petroleum Gas) thiab LNG (Liquefied Natural Gas) qhov twg qhov kev khiav hauj lwm kub poob mus rau -42 degree.

2.Petrochemical cog:Ethylene, propylene, thiab ammonia ntau lawm kab (cryogenic txheej txheem).

3.Refineries:Depressurization thiab tshuab cua tshuab qhov twg cov pa roj nrawm nrawm ua rau muaj qhov txias txias.

4.Cold Climate Infrastructure:Cov kav dej hauv arctic lossis siab - thaj chaw qhov siab qhov chaw uas qhov kub thiab txias poob qis dua -29 degree

Cov txiaj ntsig tseem ceeb rau qhov tseem ceeb rau cov neeg siv khoom

Thaum pitching A333 Gr. 6 ERW rau cov neeg yuav khoom, hais txog cov ntsiab lus no:

Kev nyab xeeb hauv Harsh Environments:Tsis zoo li A106 Gr. B, nws yog qhov yuav tsum tau muaj kev cuam tshuam - kuaj rau -46℃. Yog tias qhov project kub poob qis dua -29 degree, A333 Gr. 6 yog tus qauv yuav tsum tau ua.

Economic Alternative:Nws yog qhov pheej yig dua li cov hlau tsis muaj steel (A312 TP304L/316L) lossis siab -nickel alloys (A333 Gr. 8) thaum muab kev ua tau zoo hauv nruab nrab qis- qhov kub thiab txias (-46℃).

Tus nqi -Kev ua tau zoo ntawm ERW:ERW cov kav dej muab tus nqi qis dua cov kav dej seamless nrog lub ntsej muag zoo nkauj thiab cov phab ntsa tuab, ua rau lawv zoo tagnrho rau cov kev ntsuas siab sib xws hauv qis - qhov kev pabcuam kub