There are several types of pipe tempering

Zvinoenderana neGB/T9711.1 pombi simbi pombi kuita zvinodiwa, zvinoenderana neyakasiyana tembiricha yekupisa, inogona kukamurwa kuva anotevera marudzi ekupisa:

[1] Kudzika kwekushisa kwepasi (150-250 degrees)
Iyo microstructure inowanikwa nekudzika kwakadzika tembiricha inodziya martensite.Chinangwa chayo ndechekuderedza kudzima kushushikana uye brittleness yesimbi yakaomeswa pachigadziro chekuchengetedza kuomarara kwayo kwepamusoro uye kushomeka kwepamusoro, kuitira kudzivirira kuputika kana kukuvadzwa nguva isati yakwana panguva yekushandiswa.Inonyanya kushandiswa kune ese marudzi emhando dzepamusoro kabhoni yekucheka maturusi, maturusi ekuyeresa, GB/T9711.1 pombi pombi yesimbi pombi, inotenderedza mabearings uye carburizing zvikamu, nezvimwewo, kuomarara mushure mekupisa ZVINHU HRC58-64.

[2] Kudzikamisa tembiricha (250-500 madhigirii)
Iyo microstructure inowanikwa nekudzikama kwepakati ndeye tempered trostite.Chinangwa ndechekuwana simba regoho repamusoro, elastic muganho uye kuoma kwakanyanya.Naizvozvo, inonyanya kushandiswa kune ese marudzi eGB/T9711.1 pombi simbi pombi uye inopisa mold kurapwa, mushure mekupisa kuoma kazhinji HRC35-50.

[3] Kupisa kwakanyanya (500-650 madhigirii)
Iyo microstructure inowanikwa nepamusoro tembiricha tempering is tempered sortensite.Kazhinji, kurapwa kwekupisa kwakasanganiswa nekudzima uye kupisa kunonzi quenching uye tempering.Chinangwa chayo ndechekuwana zvirinani zvakakwana zvemichina zvesimba, kuoma, plastiki uye kuoma.Naizvozvo, inoshandiswa zvakanyanya mumotokari, GB/T9711.1 pombi yesimbi pombi, maturusi emuchina uye zvimwe zvakakosha zvimiro zvikamu, sekubatanidza tsvimbo, bhaudhi, giya uye shaft.Kuoma mushure mekupisa kazhinji HB200-330.

Standard

API SPEC 5L -- American Petroleum Institute Standard

GB/T9711 -- National chiyero cheChina

Uses

Inoshandiswa kune okisijeni, mvura nemafuta ekufambisa pombi mu petroleum uye gasi rechisikigo indasitiri

Main kugadzirwa kwesimbi pombi mamakisi:

B, X42, X52, X60, X65, X70 L245 L290 L320 L360 L390 L450 L485

Mechanical properties

Standard	Product Level	Steel Giredhi	Yield Strength (min), Mpa	Tensile Strength (MPa)
API 5L GB/T9711.2	PSL 1	A kana L210	210	335
		B kana L245	245	415
		x42 kana L290	290	415
		X46 kana L320	320	435
		X52 kana L360	360	460
		X56 kana L390	390	490
		X60 kana L415	415	520
		X70	483	565
	PSL 2	BR kana L245R	245~450	415~760
		X42R kana L290R	290~495	415~760
		BN kana L245N	245~450	415~760
		X42N kana L290N	290~495	415~760
		X46N kana L320N	320~525	435~760
		X52N kana L360N	360~530	460~760
		X56N kana L390N	390~545	490~760
		X60N kana L415N	415~565	520~760
		X65N kana L450N	425~566	525~760
		X70 kana L480	484~565	565~768
		X80	552~690	621~827

Tafura yemakemikari Elements mupombi

Product Level	Steel Giredhi	Kemikari Inoumbwa,%
Product Level	Steel Giredhi	C	Mn	P	S	Uye	IN	Nb	Of	CEpcm
PSL 1	B kana L245	≤0.28	≤1.20	≤0.030	≤0.030	-	-	-	-	-
	x42 kana L290	≤0.28	≤1.30	≤0.030	≤0.030	-	-	-	-	-
	X46 kana L320	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	-
	X52 kana L360	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	-
	X56 kana L390	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	-
	X60 kana L415	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	-
	X70	≤0.28	≤1.40	≤0.030	≤0.030	-	-	-	-	-
PSL 2	BR kana L245R	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	c	c	≤0.04	≤0.25
	X42R kana L290R	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	≤0.06	≤0.05	≤0.04	≤0.25
	BN kana L245N	≤0.24	≤1.20	≤0.025	≤0.015	≤0.40	c	c	≤0.04	≤0.25
	X42N kana L290N	≤0.24	≤1.30	≤0.025	≤0.015	≤0.40	≤0.06	≤0.05	≤0.04	≤0.25
	X46N kana L320N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.40	≤0.07	≤0.05	≤0.04	≤0.25
	X52N kana L360N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	≤0.25
	X56N kana L390N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	≤0.25
	X60N kana L415N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	-
	X65N kana L450N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	-
	X70N	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04	-
	X80	≤0.24	≤1.40	≤0.025	≤0.015	≤0.45	≤0.10	≤0.05	≤0.04