JIS G3442 SGPW Welded Steel Tube Galvanized Steel Pipes For Ordinary Piping
Contact Person : Richard SHEN
Phone Number : +86-13736164628
WhatsApp : +8613736164628
Minimum Order Quantity : | 2 Tons | Price : | USD 400-700 Ton |
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Packaging Details : | In bundles in wooden box | Delivery Time : | 35-45 Days |
Payment Terms : | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability : | 6000 Tons per Year |
Place of Origin: | China | Brand Name: | TORICH |
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Certification: | ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR | Model Number: | GB/T 14291 |
Detail Information |
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Product Name: | GB/T 14291 Welded Q235A/Q235B Steel Tubes For Mine Liquid Service | Material: | Q235A,Q235B,Q295A,Q295B,Q345A,Q345B |
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Type: | Welded Steel Tube | Surface: | Oiled |
Usage: | Mine Liquid Service | Shape: | Round |
Length: | 4-12m | OD: | 21.3-660mm |
WT: | 2.5-14mm | ||
Highlight: | welding steel tubing,electric resistance welded steel tube |
Product Description
GB/T 14291 Welded Q235A/Q235B Steel Tubes for Mine Liquid Service
Application:Mine wind, drainage, drainage gas pressure and the pulp conveying with straight seam welded steel pipe
Size:L--4~12m
OD--21.3-660mm
WT--2.5-14mm
Grade:Q235A,Q235B,Q295A,Q295B,Q345A,Q345B
Manufacture method:High-frequency resistance welding
Delivery state:Steel pipe should be straight seam tube flat end light delivery.The supply and demand both sides talks things over, can also according to the weld heat treatment delivery status or other status.
TABLE 1 Allowable deviation of outer diameter and wall thickness
Unit: millimeter
Nominal outside diameter D | Allowable deviation of outer diameter | Permissible deviation of wall thickness |
D≤48.3 | ±0.50 | ±10%S |
48.3<D≤273 | ±1%D | |
D>273 | ±0.75%D |
TABLE 2 Mechanical Property
Grade | Tensile strength
| Lower yield strength | Elongation A% Not less than | |
D≤168.3 | D>168.3 | |||
Q235A,Q235B | 375 | 235 | 15 | 20 |
Q295A,Q295B | 390 | 295 | 13 | 18 |
Q345A,Q345B | 470 | 345 | 13 | 18 |
Note : Tensile test arbitration time is based on longitudinal sample. |
TABLE 3 Inspection items, test methods and sampling number of steel pipes
NO | Inspection project | Sampling method and test method | Sampling quantity |
1 | chemical composition | GB/T 20066,GB/T 223,GB/T 4336 | One each furnace(canister) |
2 | Tensile test | GB/T 228,GB/T 2975 | One each batch |
3 | Tensile test | GB/T 241 | One by one |
4 | Ultrasonic examination | GB/T18256 | One by one |
5 | Eddy current flaw detection | GB/T 7735 | One by one |
6 | Bending test | GB/T 244 | Two per batch |
7 | Flattening test | GB/T 246 | Four each roll |
Table4 Outer Diameter,Wall Thicknes,Theoretical Weight and Test Pressure
Norminal Outer Diameter(D)/mm | Norminal Wall Thickness(S)/mm | Theoretical Weight/(kg/m) | Test Pressure/MPa | ||
Q235A,Q235B | Q295A,Q295B | Q345A,Q345B | |||
21.3 | 2.5 | 1.16 | 15 | 15 | 15 |
21.3 | 3 | 1.35 | 15 | 15 | 15 |
21.3 | 3.5 | 1.54 | 15 | 15 | 15 |
25 | 2.5 | 1.39 | 15 | 15 | 15 |
25 | 3 | 1.63 | 15 | 15 | 15 |
25 | 3.5 | 1.86 | 15 | 15 | 15 |
25 | 4 | 2.07 | 15 | 15 | 15 |
26.9 | 2.5 | 1.50 | 15 | 15 | 15 |
26.9 | 3 | 1.77 | 15 | 15 | 15 |
26.9 | 3.5 | 2.02 | 15 | 15 | 15 |
26.9 | 4 | 2.26 | 15 | 15 | 15 |
31.8 | 2.5 | 1.81 | 15 | 15 | 15 |
31.8 | 3 | 2.13 | 15 | 15 | 15 |
31.8 | 3.5 | 2.44 | 15 | 15 | 15 |
31.8 | 4 | 2.74 | 15 | 15 | 15 |
33.7 | 2.5 | 1.92 | 15 | 15 | 15 |
33.7 | 3 | 2.27 | 15 | 15 | 15 |
33.7 | 3.5 | 2.61 | 15 | 15 | 15 |
33.7 | 4 | 2.93 | 15 | 15 | 15 |
38 | 2.5 | 2.19 | 15 | 15 | 15 |
38 | 3 | 2.59 | 15 | 15 | 15 |
38 | 3.5 | 2.98 | 15 | 15 | 15 |
38 | 4 | 3.35 | 15 | 15 | 15 |
40 | 2.5 | 2.31 | 15 | 15 | 15 |
40 | 3 | 2.74 | 15 | 15 | 15 |
40 | 3.5 | 3.15 | 15 | 15 | 15 |
40 | 4 | 3.55 | 15 | 15 | 15 |
42.4 | 2.5 | 2.46 | 15 | 15 | 15 |
42.4 | 3 | 2.91 | 15 | 15 | 15 |
42.4 | 3.5 | 3.36 | 15 | 15 | 15 |
42.4 | 4 | 3.79 | 15 | 15 | 15 |
48.3 | 2.5 | 2.82 | 14.6 | 15 | 15 |
48.3 | 3 | 3.35 | 15 | 15 | 15 |
48.3 | 3.5 | 3.87 | 15 | 15 | 15 |
48.3 | 4 | 4.37 | 15 | 15 | 15 |
51 | 2.5 | 2.99 | 13.8 | 15 | 15 |
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