Qhov sib txawv ntawm ASTM A312 thiab A269

Qhov sib txawv ntawm ASTM A312 thiab A269
ASTM A269 / A269M Standard Specification rau Seamless thiab Welded Austenitic Stainless Hlau Tubing rau General Service
ASTM A312 / A312M Standard Specification rau Seamless, Welded, thiab hnyav hnyav ua haujlwm Austenitic Stainless hlau yeeb nkab

 

ASTM A269 sib npaug li cas?

ASTM A-269 thiab nws qhov sib npaug ASME, DIN & EN Standard. 202, 304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti, 3216L, 316Ti, 316LN 347, 347H, 904L, SMO 254, ALLOY 254, 6MO, 6MOLY, UNS S31254 ETC.

 

ASTM A312 vs.A269: Khoom & Qib

Txuj Yam khoom	ASTM A 213	ASTM A 269 Cov khoom siv	ASTM A 312 Cov Lus Qhia Tshwj Xeeb
Qib	304 304L 304H 304N 304LN 316 316L 316 Ti 316N 316LN 321 321H 310S 310H 309S 317 317L 347 347H	304 304L 304H 304N 304LN 316 316L 316 Ti 316N 316LN 321 321H 310S 310H 309S 317 317L 347 347H	304 304L 304H 304N 304LN 316 316L 316 Ti 316N 316LN 321 321H 310S 310H 309S 317 317L 347 347H

 

Qhov sib txawv ntawm ASTM A312 Thiab ASTM A269

Txuj	ASTM A 312 Cov Lus Qhia Tshwj Xeeb	ASTM A 269 Cov khoom siv
Qhov txawv yooj yim	Welded thiab Seamless Steel Yeeb Nkab	Welded thiab Seamless Steel Tubing
Phab ntsa Thickness	Qhov nruab nrab phab ntsa thickness (+/-10%)	Qhov nruab nrab phab ntsa thickness (+/-10%)
Daim ntawv thov	Stainless hlau yeeb nkab rau siab -kub thiab kev pabcuam corrosive.	Ua tau zoo nyob rau hauv corrosion kuj thiab oxidation kuj yuav tsum tau nyob rau hauv siab kub.

 

ASTM A312 vs.A269: OD kam rau ua

OD Tolerance (mm)	OD thiab Ua siab ntev	OD thiab Ua siab ntev	OD thiab Ua siab ntev
	D<25.4 +/-0.10	D<38.1 +/-0.13	10.3 Tsawg dua lossis sib npaug rau D Tsawg dua lossis sib npaug rau 48.3 +0.40/-0.80
	25.4 Tsawg dua lossis sib npaug rau D Tsawg dua lossis sib npaug rau 38.1 +/-0.15
	38.1	38.1 Tsawg dua lossis sib npaug D<88.9 +/-0.25	48.3
	50.8 Tsawg dua lossis sib npaug rau D<63.5 +/-0.25
	63.5 Tsawg dua lossis sib npaug D<76.2 +/-0.30	88.9 Tsawg dua lossis sib npaug D<139.7 +/-0.38	114.3
	76.2 Tsawg dua lossis sib npaug rau D Tsawg dua lossis sib npaug rau 101.6 +/-0.38
	101.6	139.7 Tsawg dua lossis sib npaug D<203.2 +/-0.76	219.1
	190.5

 

ASTM A312 vs.A269: WT Kev kam rau siab

WT kam rau ua (mm)	O.D. W.T. Ua siab ntev	O.D. W.T. Ua siab ntev	O.D. W.T. Ua siab ntev
	D Tsawg dua lossis sib npaug rau 38.1 WT +20%/-0	D<12.7 WT +/- 15%	10.3 Tsawg dua lossis sib npaug rau D Tsawg dua lossis sib npaug rau 73.0 WT +20.0%/-12.5%
	D>38.1 WT +22%/-0	12.7 Tsawg dua lossis sib npaug D<38.1 WT +/- 10%	88.9 Tsawg dua lossis sib npaug rau D Tsawg dua lossis sib npaug rau 457.0 t / D Tsawg dua lossis sib npaug li 5% WT +22.5%/-12.5%
		D Ntau dua lossis sib npaug rau 38.1 WT: +/- 10%	88.9 Tsawg dua lossis sib npaug rau D Tsawg dua lossis sib npaug rau 457.0 t/D >5% WT +15.0%/-12.5%

 

Kev xeem rau ASTM A269 yog dab tsi?

Hydrostatic Test	OD (mm) Siab max (MPa)	OD (mm) Siab max (MPa)	OD (mm) Siab max (MPa)
	D<25.4, 7Mpa	D<25.4, 7Mpa	D Tsawg dua lossis sib npaug rau 88.9, 17MPa
	25.4 Tsawg dua lossis sib npaug D<38.1, 10Mpa	25.4 Tsawg dua lossis sib npaug D<38.1, 10Mpa
	38.1 Tsawg dua lossis sib npaug D<50.8, 14Mpa	38.1 Tsawg dua lossis sib npaug D<50.8, 14Mpa
	50.8 Tsawg dua lossis sib npaug rau D<76.2, 17MPa	50.8 Tsawg dua lossis sib npaug rau D<76.2, 17MPa	D>88.9, 19MPa
	76.2 Tsawg dua lossis sib npaug D<127, 24MPa	76.2 Tsawg dua lossis sib npaug D<127, 24MPa
	D Ntau dua lossis sib npaug rau 127, 31Mpa	D Ntau dua lossis sib npaug rau 127, 31Mpa
	P=220.6t/D	P=220.6t/D	P=2St/DS=50%Rp0.2
Intergranular Corrosion Test	ASTM A262 E	ASTM A262 E	ASTM A262 E
Eddy Tam sim no Test	ASTM E426, ASTM E426	ASTM E426, ASTM E426	ASTM E426, ASTM E426

 

Dab tsi yog qhov txawv ntawm ASTM A270 thiab A269?

Qhov sib txawv tseem ceeb yog ASTM A270 yog tus qauv rau cov kav dej huv, thaum A269 yog rau lub hom phiaj dav dav. A270 muaj cov kev cai nruj dua rau kev ua kom tiav, huv si, thiab seamlessness kom tau raws li qhov xav tau ntawm kev lag luam tshuaj thiab zaub mov. Hauv qhov sib piv, A269 muaj qhov nruj me ntsis ntawm qhov yuav tsum tau ua tiav thiab tsim nyog rau ntau daim ntawv thov kev lag luam.