Tubos de acero | ASTM A234 butt weld pipe fittings,A182 forged pipe fittings,B16.5 weld neck flange,API 5L seamless pipes
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Haihao Group

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Hebei Haihao High Pressure Flange Pipe Fitting Group Co fue fundada en 1982, ubicada en el condado de Mengcun-la ciudad natal de accesorios de tubería en China.


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Steel pipes

En Haihao, fabricamos y disponemos de una gama mucho los productos de tubería de acero. Estos productos incluyen: tubos de acero, accesorios de tubería, bridas forjadas, en varias normas: AMSE / DIN / BS / ISO / JIS / GOST / etc y con diversos materiales: acero al carbono, acero de aleación, acero inoxidable. Podemos Promist calidad con ABS / API / ISO 2008 CERT.

Steel Pipe TypeSteel Pipe StandardsSteel Pipe Material

Steel Pipe Type


Steel Pipe Standards


Steel Pipe Material


EN P235GH steel for use in pressure vessels, boilers and heat ...

P235GH is a European specified steel for use in pressure vessels, boilers and heat exchangers. The composition of this steel makes it ideal for applications where elevated work ...


GB 20 carbon seamless steel pipe

GB 20# carbon steel bar for steel pipe ,flange and pipe fittingsThis group of Chinese (GB) standard specifications covers carbon and alloy steel plates and forgings used in boi ...


GB Q235 ordinary structural carbon steel pipes

GB Q235 ordinary structural carbon steel plate for pipe,flange and pipe fittingsWhat is Q235,The difference between Q235A and Q235B?Ordinary carbon steel – General Board, ...


GOST 20295-85 K52 Seamless Steel Pipe

GOST 20295-85 K52 Seamless Steel PipeSteel gradeChemical composition,%,maxCMnSiSPCrNiCuVCarbon steel0.220.650.370.040.0350.250.30.3–Low alloy steel0.21.650.60.0350.0330.8 ...


JIS G3455 STPG370 Carbon steel pipe

JIS G3454 Stpg370 Steel Pipes Carbon Steel PipesThis japanese Industrial Standard specifies the carbon steel pipes, hereinafter referred to as the “pipes”, used for ...


JIS G3101 General Structure Hot Rolled SS400 Steel

JIS G3101 SS400 JIS G3101 SS400 steel plate/sheet, under JISG3101 standard, we can regard SS400 steel plate/sheet for general purpose structural steel.JIS G3101 SS400 is a tech ...


JIS G3455 STPG42 Carbon steel pipe

1. Scope This japanese Industrial Standard specifies the carbon steel pipes, hereinafter referred to as the “pipes”, used for pressure service at an approximate max ...


JIS STPG38 carbon steel seamless pipe for mechanical structur ...

1. Scope This japanese Industrial Standard specifies the carbon steel pipes, hereinafter referred to as the “pipes”, used for pressure service at an approximate max ...


P235GH : European specified steel for use in pressure vessels ...

P235GH is a European specified steel for use in pressure vessels, boilers and heat exchangers. The composition of this steel makes it ideal for applications where elevated work ...


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