A179 Galvanized steel pipe

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Product Introduction

What is a galvanized steel pipe?

Galvanized pipe, also known as galvanized steel pipe, is divided into hot-dip galvanizing and electro-galvanizing. The hot-dip galvanizing layer is thick, with uniform plating, strong adhesion and long service life. The cost of electroplating is low, the surface is not very smooth, and its corrosion resistance is much worse than that of hot-dip galvanized pipes.

Hot dip galvanizing process:

Workpiece degreasing → washing → pickling → washing → drying solvent dip fluxing preheated hot dip galvanized → cooling → finishing → rinsing → drying → passivation test

Cold-galvanized process:

Chemical degreasing → washing → hot water hot water electrolysis degreasing → washing → washing → strong corrosive galvanized iron alloy → washing → washing → light → → washing → drying passivation

APPEARANCE OF HOT-DIP GALVANIZING AND COLD GALVANIZING

Cold galvanizing looks more smooth, bright, color passivation process plating layer is yellow-green in color, was colorful. Plating layer was bluish-white or white with white passivation process was green, white coating passivation process and the sun was significant Colorful angle. The complex workpiece angular edges parts prone to “electrical burning” from gloomy, the parts of the zinc layer thick. Yin corner site is easy to form a current dead undercurrent gray area and the area zinc layer is thinner. The workpiece overall zinc tumor, caking phenomenon.

Hot dip galvanized look a little rough compared to the electro-galvanized, silvery white, look prone process waterlines and a few drops of tumor is more obvious, especially in the one end of the workpiece. Hot dip galvanized zinc layer than a few times of the electro-galvanized thick corrosion protection is several times that of the electro-galvanized.

Name	SA179 cold drawn straight seamless steel tubes and pipes
Standard	Meet or exceed ASTM,ASME,API,ANSI and DIN standards.
	ASTM A106/A179/A192/A210/A213/A519 etc.
	DIN2391/DIN17175/EN10305 etc
	GB8162/GB8163/GB3639 etc
Material	A179,St35,St45,St52,E215,E235,E355,10,20,
Material	A106,A179,A192,A210,T11,T22,T12 etc
Size	Outer diameter:6-114.0mm
	Wall thickness:0.5-15mm
	Length:max 2400mm,generally 6000mm
Application	Cold drawn or cold rolled precision seamless steel tubes for hydraulic pressure and pneumatic
	services.
	For Auto use,machinery use,oil cylinder tube,motorcycle shock reducer use,auto shock reducer
	inner cylinder,etc.
	Seamless steel pipes for low and medium pressure boiler, high pressure boiler, ship-building,
	Liquid service, petroleum cracking, chemical fertilizer equipment,Drawing-oil-equipment and structure purposes.
Business scope	DIN series cold drawn precision seamless steel tubes
	DIN series cold rolled precision seamless steel tubes
	Related coated and galvanized steel tubes
	Rustproof phosphyorylated tube
Main characteric	No Oxidation Layer on the outer and inner walls;
	No Leakage under high pressure;
	No Crake under flating and flattening;
	No distortion after cold bending;
	High precision high cleanness;
	Excellent brightness
	cold drawn and hot finished
	Superior performance for high pressure and temperature uses
	Black finish and hot dip galvanized
	Excellent corrosion resistance
Coating for protection	black painting,anti-rust oiled or varnish,also can be required according to customers' requirements

PACKAGE DELIVERY 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 24-26CBM

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 54CBM

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High) 68CBM

In bundle,plastic bags,thin film,wooden pallet,standard seaworthy export packing or as customer demands

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