| Product Name | Seamless Steel Pipes |
| Material/Grade | GR.B,X42,X46,X52,X56,X60,X70,ASTM A106B, S275JRH,S275JOH,STPG370 |
| Standard | API,ASTM A530,ASTM A179/192/252 ASTM A53/A106 |
| Outter Diameter (OD) | 13.1mm-660mm |
| Thickness | 2mm-80mm |
| Length | 1mm-12m, Fixed length, random length or as required |
| Test | Chemical Component Analysis,Mechanical Properties, Technical Properties, Exterior Size, Nondestructive Testing |
| Advantages | Competitive price, Quality assurance, Short delivery time, Superior Service,Minimum quantity is small |
| Technique | Hold Rolled |
| Standard | ASTM JIS GB EN |
| Application | Construction, Industry, Decoration and Foodstuff etc. |
| Monthly Supply | 5000 Tons |
| Delivery Time | 7-10 Working Days after Deposit |
| Package | Container/Pallet or Other Export Package Suitable for Long Distance Shipping |
Pipe ordered under this specification is for pipe piles in which the steel cylinder acts as a permanent load-carrying member, or as a shell to form cast –in-place concrete piles.
|
Tensile Requirements |
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|
|
Grade 1 |
Grade 2 |
Grade 3 |
| Tensile strength, min, psi (MPa) |
50 000 (345) |
60 000 (415) |
66 000 (455) |
| Yield point or yield strength, min, psi(MPa) |
30 000 (205) |
35 000 (240) |
45 000 (310) |
| Basic minimum elongation for nominal wall thicknesses %6 in. (7.9 mm) or more; Elongation in 8 in. (203.2 mm), min, % Elongation in 2 in. (50.8 mm), min, % |
18 30 |
14 25 |
... 20 |
| For nominal wall thicknesses less than %6 in. (7.9 mm), the deduction from the basic minimum elongation in 2 in. (50.08 mm) for each Vzi - in. (0.8 mm) decrease in nominal wall thickness below %6 in. (7.9 mm), in percentage points |
1.5A |
1.25A |
1.0A... |
Table 2 gives the computed minimum values:
| Calculated Minimum Elongation Values | ||||
| Nominal Wall Thickness |
Elongation in 2 in. (50.8 mm), min, % |
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|
in. |
mm. |
Grade 1 |
Grade 2 |
Grade 3 |
|
5/16（0.312） |
7.9 |
30.00 |
25.00 |
20.00 |
|
9/32（0.281） |
7.1 |
28.50 |
23.75 |
19.00 |
|
1/4（0.25） |
6.4 |
27.00 |
22.50 |
18.00 |
|
7/32（0.219） |
5.6 |
25.50 |
21.25 |
17.00 |
|
3/16（0.188） |
4.8 |
24.00 |
20.00 |
26.00 |
|
11/6（0.172） |
4.4 |
23.25 |
19.50 |
15.50 |
|
5/32（0.156） |
4.0 |
22.50 |
18.75 |
15.00 |
|
9/64（0.141） |
3.6 |
21.75 |
18.25 |
14.50 |
|
1/8（0.125） |
3.2 |
21.00 |
17.50 |
14.00 |
|
7/64（0.109） |
2.8 |
20.25 |
16.75 |
13.50 |
| The above table gives the calculated minimum elongation values for various nominal wall thicknesses. Where the specified nominal wall thickness is intermediate to those shown above, the minimum elongation value shall be determined as follows:Grade:1 E=48t+15.002 E=40t+12.50 E=32t+10.00
where: E = elongation in 2 in., %, and t = specified nominal wall thickness, in. |
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