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


Seamless Steel tube for boiler


Steel pipe for boiler 
Standard: DIN17175 
Steel Grade: St35.8, St45.8, 15Mo3,13CrMo44 
Diameter: 10-80mm 
Thinkness: 1.2-8mm


Seamless Steel Pipe for boiler

Standard: DIN17175
Steel Grade: St35.8, St45.8, 15Mo3,13CrMo44
Diameter: 10-80mm

Wall thickness: 1.2-8mm

 Application: apply to the boiler industry pipeline.

 Chemicaland mechanical properties


Standards Steel Grade Chemical composition(%) Mechanical properties (heat treatment status)
C Mn Si S,P Tensile strength Yield strength Elongation(%))
DIN 17175 St35.8 ≤0.17 0.40~0.80 0.10~0.35 ≤0.040 360~480 ≥235 ≥25
St45.8 ≤0.21 0.40~1.20 0.10~0.35 ≤0.040 410~530 ≥255 ≥21
15Mo3 0.12~0.20 0.40~0.80 0.10~0.35 ≤0.035 450~600 ≥270 ≥22
13CrMo44 0.10~0.18 0.40~0.70 0.10~0.35 ≤0.035 440~590 ≥290 ≥22

Our Advantages:

1)      Fast Delivery: around 30 days below 50Metric Tons  after sight of Irrevocable L/C or Deposit;

2)      Quality Assured: Strictly acc. To International standard ASTM & BS & EN & JIS, with System ISO  certification;

3)      Good Service: supplied professional technical guide free of charge at anytime;

4)      Reasonable Price: to be better support your business;

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