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Home > Products > Carbon Steel Tube > Welded Steel Tube > Straight seam welded pipe
Straight seam welded pipe
Straight seam welded pipe
Straight seam welded pipe
Straight seam welded pipe
  • Straight seam welded pipe
  • Straight seam welded pipe
  • Straight seam welded pipe
  • Straight seam welded pipe

Straight seam welded pipe

    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
    Delivery Time: 35 Days

Additional Info

Transportation: Ocean,Land,Air

Port: Ningbo

Product Description

Straight seam welded pipe

Straight seam Steel Pipe and spiral steel pipe are welded steel pipe, they have been widely used in national production construction, straight seam steel pipe and spiral steel pipe because their production process is different, so there are many differences, the following specific discussion of straight seam steel pipe and spiral steel pipe difference. Straight seam welded pipe production process is relatively simple, the main production process has high-frequency welding straight seam steel pipe and submerged arc welding straight seam steel pipe, straight seam pipe production efficiency, low cost, development faster. Spiral welded pipe strength is generally higher than the longitudinal welded pipe, the main production process is submerged arc welding, spiral steel pipe can use the same width of the billet production of different pipe diameter, you can also use a narrower billet production pipe diameter larger. But compared with the same length of straight seam tube, the weld length increases $number and the production speed is lower. Therefore, the smaller-caliber welded pipe mostly adopts straight seam welding, and the large diameter welded pipe is mostly spiral welded. In the construction industry, the production of large diameter straight seam steel pipe will use the tack welding technology, a short section of straight seam steel pipe to be connected again, to meet the needs of the project length, T-shaped straight seam steel pipe defects of the probability is greatly improved, and the welding residual stress in the weld, weld metal is often in a three-way stress state, increasing the likelihood of cracking.

straight seam pipe

Nominal diameter Common tube Thickening tube
(mm)
(in)
external diameter(mm)
wall thickness(mm)
Theoretical weight(kg/m)
wall thickness(mm)
Theoretical weight
(kg/m)
6
1/8
10
2.00
0.39
2.5
0.46
8
1/4
13.5
2.25
0.62
2.75
0.73
10
3/8
17
2.25
0.82
2.75
0.97
15
1/2
21.25
2.75
1.26
3.25
1.45
20
3/4
26.75
2.75
1.63
3.5
2.01
25
1
33.5
3.25
2.42
4
2.91
32
1 1/4
42.25
3.25
3.13
4
3.78
40
1 1/2
48
3.5
3.84
4.25
4.58
50
2
60
3.5
4.88
4.5
6.16
65
2 1/2
75.5
3.75
6.64
4.5
7.88
80
3
88.5
4
8.34
4.75
9.81
100
4
114
4
10.85
5
13.44
125
5
140
4
13.42
5.5
18.24
150
6
165
4.5
17.81
5.5
21.63
seam and seamless pipe

Product Pictures:

straight seam welded pipe

seam welded tube

straight seam pipe

QUALITY CONTROL:

1. Incoming Raw Material Inspection

2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking


100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects

FAQ

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?

A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.



Looking for ideal Straight Seam Pipe Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Seam Welded Tube are quality guaranteed. We are China Origin Factory of Seam and Seamless Pipe. If you have any question, please feel free to contact us.

Product Categories : Carbon Steel Tube > Welded Steel Tube

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