TIANJIN TISCO

HIGH STANDARD CARBON STEEL PRODUCER

ST12/ST37 Galvanized square pipe

‹

›

‹

  • ST12/ST37 Galvanized square pipe
  • ST12/ST37 Galvanized square pipe
  • ST12/ST37 Galvanized square pipe

›

Hot-dip galvanized seamless steel pipe: the amount of hot dip plating is higher, the average thickness of the galvanized layer is more than 65 microns, and its own corrosion resistance is much higher than that of cold galvanized pipe. The galvanized layer of cold galvanized steel pipe is an electric coating, and the zinc layer is independently layered with the steel pipe matrix. The zinc layer is thin, and the zinc layer is simply attached to the steel tube matrix and easy to fall off. Therefore, its corrosion resistance is poor.
+86 18920895995
8618920895995
info@cntiscometal.com
Whatsapp
E-mail
CARBON STEEL PLATE
CARBON STEEL PIPE
STAINLESS STEEL
COATED STEEL
PROFILE STEEL
CONSTRUCTION MATERIALS
Consulting service
TEL:+86 18920895995
E-mail:info@cntiscometal.com
WhatsApp:8618920895995
E.png
Submit
Product Specification
Ingredients/Data

The difference between cold galvanizing and hot galvanizing:

Cold galvanized coatings are mainly anticorrosive by electrochemical principles. Hot dip galvanizing is a method of dipping steel members into molten zinc solution to obtain a metal coating. The corrosion resistance of hot-dip galvanizing is higher than that of cold galvanizing. And hot galvanizing will not rust in a few years, and cold galvanizing will rust in three months.

The zinc layer of hot dip galvanizing itself is relatively thick, with a thickness of more than 10um, although the surface is bright, but rough, there will be zinc flowers. The zinc layer of cold galvanized is very thin, only 3-5um thickness, although the surface is smooth, it will have gray and dirty performance, good processing performance and insufficient corrosion resistance.


Galvanized pipe size specification table


Specification

Galvanized pipe measuring 6 meters

Welded pipe measuring 6 meters

Number

Nominal inside diameter

Inches

OD/mm

WT/mm

Minimum wall thickness

Weight per meter/kg

Weight per stick/kg

Weight per meter/kg

Weight per stick/kg

1

DN15 galvanized pipe

 1/2

21.3

2.8

2.45

1. 35

8.14

1.28

7.68

2

DN20 galvanized pipe

 3/4

26.9

2.8

2.45

1. 76

10. 56

1. 66

9.96

3

DN25 galvanized pipe

1.0 

33.7

3.2

2.8

2.554

15.32

2.41

14.46

4

DN32 beryllium zinc tube

1.25

42.4

3.5

3.06

3.56

21.36

3.36

20.16

5

DN40 galvanized pipe

1.5

48.3

3.5

3.06

4.1

24.6

3.87

23.22

6

DN50 plated front tube

2.0 

60.3

3.8

3.325

5.607

33.64

5.29

31.74

7

DN65 galvanized pipe

2.5 

76.1

4.0 

3.5

7.536

45.21

7.11

42.66

8

DN80 galvanized pipe

3.0 

88.9

4.0 

-

8.88

53.28

8.38

50.28

9

DN100 galvanized pipe

4.0 

114.3

4.0 

-

11.53

69.18

10.88

65.28

10

DN125 galvanized pipe

5.0 

140

4.5

-

15.942

98.65

15.04

90.24

11

DN150 galvanized pipe

6.0 

168.3

4.5

-

19.27

115.62

18.18

109.08

12

DN200 galvanized pipe

8.0 

219.1

6.0（Welded pipe）

-

-

-

31.53

189.18

13

DN200 galvanized pipe

8.0 

219.1

6.5（Hot dip galvanizing）

-

36.12

216.7

-

-


tutu-20.jpg


Product Name

ST12/ST37 Galvanized square pipe

Standard

EN/DIN/JIS/ASTM/BS/ASME/AISI etc.

Material type

Q195 Q235A A35 A53 A106 S235 S355 Dx51d+Z Dx52d+Z Dx53d+Z,etc.

Outer Diameter

Seamless: 1/4"-36"

Welding: 21.3mm-3620mm

Round Tube: 1/2"-10"

Square Tube/Rectangular Tube: 15x15mm-400x600mm

Wall Thickness

Seamless: 1.25mm-50mm

Welding: 1.65mm-65mm

Wall Thickness

1MM~12MM as the requirement

Outer Diameter

21.3MM~219.1MM

Length

5m-14m,5.8m,6m,10m-12m,12m or as customer's actual reques

Zinc Coating

30g-275g

Technique

Seamless / ERW(GALVANIZED)

Packing

Bundle, or with all kinds of colors PVC or as your requirements

Certificate

CE, tisi, KS, JIS, GS, ISO9001

Delivery Time

within 7 days

Other Services

Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.


tu107.jpg.png

St37 is a German brand, but it is a general brand, and there are several smaller brands.

For example, St37-2 St37-3U St37-3n RSt-2 USt37-2 and so on.

ST37-2 is a German carbon structural steel material grade

Equivalent to carbon structural steel Q235B

----------------------------------------------------------------------------------------

st12 is equivalent to Q235

St12 yield point 280N/mm2 Tensile strength 270 ~ 410N/mm2

Chemical composition (%) : C≤0.10%, Mn≤0.50%, P≤0.035%, S≤0.035%


tutu-21.jpg

Hot product
Our Services
1.jpg
2.jpg
3.jpg

Buy our products, we will provide free service

Business service

Tianjin TISCO is a professional steel supplier. With the support of the most professional steel manufacturers and a large number of customers, we can not only provide you with ordinary steel, but also help you customize special steel, special size, special process shape and other services.

Packaging and transportation

Tianjin TISCO uses standard export transport packaging and bundles steel bands according to the size of the stainless steel plate. We have frequent cooperation with freight forwarders to ensure the safe arrival of goods to the port.
According to our shipping experience, a 20-foot container can hold 22 tons of stainless steel, and a 40-foot container can hold 25 tons of stainless steel. For larger orders, we ship by bulk carrier, which is cheaper. Packaging can also be customized according to customer needs.

Contact us

We provide our customers with planning services, just-in-time production planning and provide customized services to meet the specific requirements of end users. Our company has been committed to improving customer service and product quality for more than ten years, providing high-value solutions for customers' businesses as the basic standard of our work.

SUBMIT

TOP