ASTM A178 Welded Hlau Boiler Tube

A178 steel kav yog hluav taws xob-kuj-welded carbon steel thiab carbon-manganese steel boiler thiab superheater raj. A178 welded kav tuaj nyob rau hauv peb qib: GRA, GRC, thiab GRD. Qhov ntev thiab tuab ntawm A178 cov kav dej feem ntau yog los ntawm ib txoj kab uas hla ntawm 1/2 mus rau 5 ntiv tes thiab ib txoj kab uas hla ntawm 0 035 mus rau 0.360 ntiv tes. Qhov tsawg kawg nkaus phab ntsa thickness yog los ntawm 0.035 mus rau 0.360 nti. Raws li lub npe nrov thoob ntiaj teb cov khoom lag luam steel, GNEE Group tuaj yeem muab ntau yam steel kav rau koj. Yog tias koj muaj lwm yam kev xav tau, thov koj xav tiv tauj peb.

A178 Resistance Welded Steel Tube Specification

Txuj	ASTM A178, ASME SA178
Qib	Qib A, Qib C, Qib D
Cov txheej txheem	ERW Tube
OD	12.7mm txog 127mm
Phab ntsa thickness	1.5mm txog 6.{3}}mm
Ntev	6m-25m
Xaus	Plain xaus los yog bevel xaus

A178 Welded Steel Pipe Chemical Composition

Element	Qib A	Qib C	Qib D
	Tsawg carbon steel	Nruab nrab carbon steel	Manganess hlau
C%	0.06-0.18	0.35Max	0.27Max
Mn%	0.27-0.63	0.80Max	1.00-1.50
P%	0.035	0.035	0.030
S%	0.035	0.035	0.015
Si%	.....	.....	0.10Min

A178 ERW Steel Yeeb Nkab Mechanical Propertise

	Qib A	Qib C	Qib D
Tensile zog loading Ksi (Mpa)	=47(325)	60(415)	70(485)
Yield zog Loading Ksi (Mpa)	=26(180)	37(255)	40(275)
Elongation (50 hli)%	=35	=30	=30

A178 ERW Tube

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lwm yam A178 Pipe rau Muag

A178 Carbon Manganese Steel Boiler Tubes	A178 Superheater Tubes
A178 Kub Exchanger Tube	A178 Condenser steel raj
A178 Tsawg Carbon Steel Yeeb Nkab	A178 Medium Carbon Steel Yeeb Nkab
A178 ERW carbon steel kav	A178 ERW Tube

GNEE Pipe Test

• Kev tshuaj xyuas qhov muag

Kev kuaj pom pom yog lub hauv paus ntawm kev ntsuam xyuas cov yeeb nkab steel. Cov neeg soj ntsuam yuav tsum tau xyuas seb qhov chaw ntawm cov yeeb nkab steel yog du thiab tsis muaj kab nrib pleb, xeb, thiab lwm yam tsis xws luag. Lawv kuj yuav tsum tau xyuas seb qhov luaj li cas thiab phab ntsa thickness ntawm cov yeeb nkab steel ua tau raws li qhov yuav tsum tau ua.

• Mechanical Properties Testing

Kev ntsuam xyuas cov khoom siv tshuab yog ib kauj ruam tseem ceeb hauv kev txiav txim siab qhov zoo ntawm cov kav hlau. Qhov no suav nrog kev sim tensile, kev sim khoov, thiab kev sim cuam tshuam. Kev ntsuas tensile yog siv los ntsuas lub zog thiab ductility ntawm cov yeeb nkab steel, khoov kuaj ntsuas nws cov ductility thiab toughness, thiab kev ntsuam xyuas cuam tshuam xyuas cov yeeb nkab toughness ntawm qhov kub thiab txias. Tsis tas li ntawd, kev sim rau kev ua haujlwm qaug zog thiab hnav tsis kam tuaj yeem ua raws li qhov xav tau ntawm daim ntawv thov.

• Chemical Composition Test

Kev ntsuam xyuas tshuaj muaj pes tsawg leeg yog lwm qhov tseem ceeb ntawm kev ntsuas cov yeeb nkab steel zoo. Qhov kev sim no ua kom ntseeg tau tias cov tshuaj muaj pes tsawg leeg ntawm cov yeeb nkab steel ua tau raws li cov qauv tsim. Cov txheej txheem rau kev kuaj tshuaj muaj pes tsawg leeg suav nrog spectroanalysis thiab X-ray fluorescence tsom xam. Cov txheej txheem no tuaj yeem txiav txim siab sai thiab raug txiav txim siab cov tshuaj muaj pes tsawg leeg ntawm cov yeeb nkab steel, muab lub hauv paus rau kev soj ntsuam zoo.

• Kev kuaj tsis muaj kev puas tsuaj

Kev ntsuam xyuas tsis muaj kev puas tsuaj (NDT) suav nrog kev ntsuas qhov tsis xws luag sab hauv thiab cov khoom siv hluav taws xob ntawm cov kav hlau tsis muaj kev puas tsuaj rau lawv cov qauv. GNEE ntiav ntau txoj hauv kev NDT, suav nrog kev kuaj ultrasonic, kuaj hluav taws xob, thiab kuaj cov khoom sib nqus. Cov txheej txheem no tuaj yeem txheeb xyuas qhov tsis xws luag xws li tawg, qhov pores, thiab slag suav nrog, yog li txhim kho qhov raug thiab ua tiav ntawm kev tshuaj xyuas.

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