GB13296-2013 (Pipụ igwe anaghị agba nchara maka ndị na-ekpo ọkụ na ndị na-ekpo ọkụ). A na-ejikarị ya na igwe ọkụ, igwe ọkụ ọkụ, ndị na-agbanwe ọkụ, condensers, tubes catalytic, wdg nke ụlọ ọrụ kemịkalụ. Ejiri igwe ọkụ dị elu, nrụgide dị elu, ọkpọ ígwè na-eguzogide corrosion. Ihe nnọchi anya ya bụ 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, wdg GB/T14975-1994 (igwe anaghị agba nchara nchara maka ihe owuwu). A na-ejikarị ya maka ihe owuwu n'ozuzu (ụlọ oriri na ọṅụṅụ na ụlọ oriri na ọṅụṅụ) na nhazi usoro nke ụlọ ọrụ kemịkalụ, nke na-eguzogide ikuku na acid corrosion ma nwee ụfọdụ ike ígwè ọkpọkọ. Ihe nnọchi anya ya bụ 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, wdg.

GB/T14976-2012 (igwe anaghị agba nchara nchara anwụrụ maka mmiri ụgbọ njem). A na-ejikarị ya maka ọkpọkọ ndị na-ebu mgbasa ozi na-emebi emebi. Ihe nnọchi anya bụ 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti, wdg.

YB/T5035-2010 (Pipụ igwe anaghị agba nchara maka aka uwe axle ụgbọ ala). A na-eji ya eme ihe dị elu nke carbon structural ígwè na alloy structural steel na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na-enweghị nkebi maka ụgbọ ala ọkara-axle sleeves na axle tubes of drive axle housings. Ihe nnọchi anya ya bụ 45, 45Mn2, 40Cr, 20CrNi3A, wdg.

API SPEC 5L-2018 (nkọwapụta ọkpọkọ), nke American Petroleum Institute chịkọtara ma nye ya, na-ejikarị ụwa niile.

Ọkpụkpọ ahịrị: gụnyere ọkpọkọ enweghị nkebi na welded. Ngwunye ọkpọkọ nwere njedebe dị larịị, eriri eriri na oghere oghere; usoro njikọ bụ njedebe ịgbado ọkụ, njikọ njikọ, njikọ oghere, wdg. Ihe ndị bụ isi bụ GR.B, X42, X52. X56, X65, X70 na akara igwe ndị ọzọ.

API SPEC5CT-2012 (Casing and Tubing Specification) bụ ụlọ ọrụ American Petroleum Institute (American Petreleum Instiute, nke akpọrọ "API") na-enye ya ma jiri ya mee ihe n'akụkụ niile nke ụwa.

na:

Casing: Ọkụ nke na-esi n'elu ala banye n'olulu mmiri ma na-eje ozi dị ka mgbidi mgbidi. A na-ejikọta ọkpọkọ site na njikọta. Ihe ndị bụ isi bụ akara nchara dị ka J55, N80, na P110, na akara ígwè dị ka C90 na T95 nke na-eguzogide corrosion hydrogen sulfide. Ọkwa nchara ya dị ala (J55, N80) nwere ike welded ígwè ọkpọkọ.

Tubing: Ọkụ na-etinye n'ime casing si n'elu ala gaa na akwa mmanụ, a na-ejikọta ọkpọkọ site na njikọ ma ọ bụ integrally. Ọrụ ya bụ ikwe ka igwe na-agbapụta mmanụ na-ebufe mmanụ site na akwa mmanụ na ala site na tubing. Ihe ndị bụ isi bụ akara nchara dị ka J55, N80, P110, na C90, T95 nke na-eguzogide corrosion hydrogen sulfide. Ọkwa nchara ya dị ala (J55, N80) nwere ike welded ígwè ọkpọkọ.