DIN 17175 St35.8 Seamless Steel Tubes

Place of Origin Jiangsu,China
Certification ISO 9001 ,CE
Minimum Order Quantity 1 PCS
Delivery Time 7~10 working days
Payment Terms L/C, T/T, Western Union
Supply Ability 5000 Ton/Tons per Month
Product Details
Product Name Carbon Steel Pipe Standard DIN 17175
Grade St35.8 Type Seamless Pipe(SMLS)
Thickness Schedule STD, 40, XS, 80, XXS, 160 Pipe End Plain End,Beveled End,Treaded
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Product Description
st35.8 steel pipe NBK GBK cold drawing carbon pipes

Standard:DIN 17175 : Seamless Steel Tubes For Elevated Temperatures

As far as DIN 17175 is concerned, steels that have a good mechanical properties at a higher temperature, up to 6 00 °C, and even under long-term load, are called heat-strength steels.

DIN 17175 St35.8 Seamless Steel Tubes can be used to manufacture steam boilers, pipes, pressure vessels and instruments operating at temperatures up to 600 ° C and at high temperatures.

DIN 17175 St35.8 Seamless Steel Tubes 0

 

ST35.8 STEEL PIPE MECHANICAL PERFORMANCE

Grade C Si Mn P S Cr Mo
St35.8 ≤0.17 0.10-0.35 0.40-0.80 ≤0.040 ≤0.040 / /
St45.8 ≤0.21 0.10-0.35 0.40-1.20 ≤0.040 ≤0.040 / /
15Mo3 0.12-0.20 0.10-0.35 0.40-0.80 ≤0.035 ≤0.035 / 0.25-0.35
13CrMo44 0.10-0.18 0.10-0.35 0.40-0.70 ≤0.035 ≤0.035 0.70-1.10 0.46-0.65
10CrMo910 0.08-0.15 ≤0.50 0.40-0.70 ≤0.035 ≤0.035 0.20-0.25 0.90-1.20

ID TOLERANCE:

Project Standard Size range Tolerance
Outer diameter DIN17175 Hot rolled steel pipe OD ≤ 100mm ± 0.75%( Min ± 0.5mm )
OD> 100~ 320mm ± 0.9%
Cold drawn steel pipe OD ≤ 120mm ± 0.6%( Min ± 0.25mm )
Wall thickness DIN17175 OD ≤ 130mm WT ≤ 2Sn +15%~-10%
WT > 2Sn~4Sn +12.5%~-10%
WT > 4Sn ± 9%
130 < OD ≤ 320mm WT ≤ 0.05OD +17.5%~-12.5%
0.05OD < WT ≤ 0.11OD ± 12.5%
WT > 0.11OD ± 10%

 

ST35.8 STEEL PIPE DELIVERY CONDITION


1. NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, therefore small steel pipe plastically, the plastically degree does not guarantee
4. BKW(+LC)
after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)
5. BKS(+SR)
have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

 

 

ST35.8 STEEL PIPE SUPPLY STATUS 
The 17175 St35.8 Seamless Steel Tubes Will be delivered through a suitable heat treatment. heat treatment includes:
- Normalizing
- Annealing
- Tempering; from the quenching temperature, it is not cold, but then tempered
- Adjust the mass by the isothermal transformation method.

 

Original material test
A thin sheet should be taken at the top end of each round or square bar ingot for a pickling test to determine if the top end is adequately cut. Ultrasonic testing can also be performed on the shrinkage hole as selected by the supplier.

Test:
- Chemical composition verification test
- hydrostatictest
- Tensile test
- Notched impact test
- Yield strength test
- Ring test
- Nondestructive testing

DIN 17175 St35.8 Seamless Steel Tubes 1