St37 St52 A214 A178 A53 A423 Galvanized Welded Pipe, ERW

The process is

Black tube-alkali washing-washing- -pickling-baking paste-water rinse- -immersion aid- -drying- -hot dip galvanizing- -outside blowing- - -inside blowing- -air cooling- -water cooling- -passivation- -water rinse- -inspection- -weighing- -storage.

Galvanized welded steel pipes for low-pressure fluid delivery

1. Uniformity of galvanized layer: the steel pipe sample is continuously impregnated in copper sulfate solution for 5 times without turning red (copper plating color) 2. surface quality: the surface of galvanized steel pipe should have a complete galvanized layer, no uncoated black spots and bubbles, and allow the existence of small rough surface and local zinc tumor. 3. Weight of galvanized layer: according to the requirements of the demander, galvanized steel pipe can be used as the weight measurement of zinc layer, and the average value shall not be less than 500g / square meter, of which any sample shall not be less than 480g / square meter.

Product Detail

Steel Grade:	A214 A178 A423 A513 A53/A53M A672 API 5L APE 3PE Q235 Q345 St37 St52
Standard:	ASME/ASTM SA/A214 A178 A423 A513 A672 A53 A500,A213,A312,A269,A778,A789, GB/T3091 GB/T3094;DIN EN10025; DIN EN10217-2005; BS EN10217; BS EN10219; BS EN10025;
Specification:	OD(1/2"-60") or Customized
Wt:	1.0-30mm,or according to customer's special request
Length:	1-20meters,or according to customer's special request
Package:	Export Standard Package
Pipe ends:	(1)Plain (2)Beveled (3)Threaded with coupling and plastic cap
End protector:	(1) Plastic cap (2) Iron protector (3) as request
Application:	Construction,machine structure pipe, Agriculture equipment pipe,Water and gas pipe, Greenhouse pipe, Scaffolding pipe, Building material tube, Furniture tube, Low pressure fluid tube, Oil pipe, etc.
Mill MTC:	Supplied before shipment
Inspection:	The Third Party inspection can be accepted,SGS,BV,TUV
Mount port:	Any port in China
Trade Term:	FOB,CIF,CFR,EXW,etc.
Price Term:	TT or LC at sight
Our services:	We can customized  according  to customer's requriement or drawing ,packaging according  to customers' request

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