Galvainzed Q345B Welded Steel PIPE

Product Details

galvanized pipe

Quick detail

1.Price Terms:FOB, CFR, CIF etc.

2.Place of Origin:Tianjin, China (Mainland)

3.End Treatment:Plain End,Thread,Coupling,Socket,Groove,Bevel


Galvanization, or galvanisation, (or galvanizing as it is most commonly called in that industry), is the process of applying a protective zinc coating to steel or iron, to prevent rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc. Galvanizing protects in two ways:

It forms a coating of corrosion-resistant zinc which prevents corrosive substances from reaching the more delicate part of the metal.

The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.

The zinc protects its base metal by corroding before iron, for better results application of chromates over zinc is also seen as an industrial trend.

galvanized Q345B welded steel pipe Specification



Round pipe:1/8” -24” (10.3mm-609.6mm)
Square pipe:10mm*10mm-1200mm*1200mm
Rectangular steel pipe:20*25mm-300*500mm

Wall Thickness



Less than 12m

Steel material

Q195 → SS330,ST37,ST42
Q235 → SS400,S235JR
Q345 → S355JR,SS500,ST52


ASTM A53, BS1387-1985

Zinc Weight

20μm ,40μm,60μm,70μm,80μm


1)low pressure liquid, water, gas, oil, line pipe
3)fence, door pipe


1) Plain
2) Beveled
3) Thread with Coupling or cap
4) Chamfer
5) Groove
6) Screw

End protector

1) Plastic pipe cap
2) Iron protector

Surface Treatment

1) Bared
2) Black Painted (varnish coating)
3) Galvanized
4) Oiled
5) PE,3PE, FBE, corrosion resistant coating, Anti corrosion coating.

Section Shape



With Hydraulic Testing, Eddy Current , Infrared Test


1) Bundle,
2) Bags


1) Container
2) Bulk carrier

Port of Shipment

Xingang Port,Tianjin, China

Date of Delivery

According To The Quantity And Specification Of Each Order



Galvanized steel pipe Application

It is widely used in the construction, pipe of industrial,water pipe, plastic-steel doors and windows, fence equipment,telecommunication tubes as well as greenhouse tubes for different planting and breeding business,street furniture, building frameworks, balconies, verandahs, staircases, ladders, walkways and more.

Loading and shipping

20ft GP: 5898mm(Length)x2352mm(Width)x2393mm(High)

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

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

20 feet container load 25 tons carbon steel pipe/black steel pipe/welded steel pipe whose length is under 5.8m

40 feet container load 25 tons carbon steel pipe/black steel pipe/welded steel pipe whose length is under 11.8m

Customer visit

Competitive advantage

1) OEM accepted: we can manufacture according to your requirements;

2) Mill's standard sea-worthy packing or special packing as you required;

3) Promote attentions on your orders;

4) Early delivery time;

5) Perpetual after-sales service;

6) 24-hours daily consulting time;

Welcome to wholesale low price galvainzed q345b welded steel pipe in stock from our factory. TOPSINO is one of the most competitive Welded Steel PIPE manufacturers and suppliers in China.