Limestone Quarry Plant

One of the Top 500 enterprises in China foreign trade

QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association


The difference between DIN17175 Pipe and DIN 2448 Steel Tube

. DIN17175 seamless steel tube 
2. Standard&material: DIN17175 15Mo3, 10CrMo910, 12CrMo195, 13CrMo44, etc 
3. OD: 12.7mm-127mm W. T: 2mm-16mm 
4. Manufacturing method: Cold-rolled, cold-drawn 
5. Delivery condition: Normalized+tempered 
6. Standard packing: In bundles tied with steel strips. 
7. Bevelled ends, end plastic caps, oil-coating, black painting to be confirmed 
8. Appplication: High-pressure boiler, etc.

DIN17175 seamless steel tube

DN 17175 Bolier Tube Aplplication:It is used for the pipeline of boiler industry .

Main Material Steel Tube Grades:St35.8   St45.8  15Mo3  13CrMo44  10CrMo910  

Seamless steel pipe  / Carbon steel pipe


DIN 2448 Steel Pipe specifications: 


DIN 2448 / DIN 1629 Seamless non-alloy steel tubes for pressure purposes with specified room temperature properties – line pipes

Mechanical properties
Pipe types Steel grades Upper yield limit Re min
for wall thickness in mm min
Tensile strength
Rm MPa
Elongation A% min
St37.0, St44.0, St52.0 
according to DIN 1629
16 16 40 40 65 1 t
St37.0 235 225 215 350-480 25 23
St44.0 275 265 255 420-550 21 19
St52.0 355 345 335 50-650 21 19

DIN 2448 steel pipe

1. OD: 1/8"-18", W. T.: SCH10-XXS, length: 5-12meter. 

2. Standard: ASTM, GB, BS, JIS, DIN 

3. Seamless Steel Pipe Steel Grade: ASTM A53-A/B, A106 A/B/C, DIN ST37-2, ST42, ST52.4, BS1387, GB 10# 20#, 45#, Q195-Q235 

4. Tolerance: OD: +-1%, W. T.: +12.5%/-10% 

5. Ends protection: Plastic caps 

6. Outside Coating: Black painting, anti-corrosion oil, galvanized or as per required by customer 

7. Packing: Wrapped in bundles by steel strips, or bulk 

8. Third party inspection: SGS 

9. Production Capacity: 400, 000tons per year 

10. MOQ: 5MT 

11. Delivery time: 15-30 working days after receive the payment. 

12. Main market: Asia, India, Middle East, America, Europe 

The pipes are used almost in all fields of industry. Thanks to their variety of types and sizes, they can also be used for general purposes. The pipes are manufactured through hot rolling or cold drawing.



Steel grades Weld deoxidation type
( semi-killed steel only)
RR special killed

C% P% S% N% Addition of nitrogen binding
elements e.g. min 0,020% total Al
St37.0 R 0,17 0,040 0,040 0,009 -
St44.0 R 0,21 0,040 0,040 0,009 -
St52.0 RR 0,22 0,040 0,035 - YES


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