Factory Promotional Seamless Welded Carbon Alloy Steel Q345 20cr 40cr Seamless Steel Pipe
Short Description:
40Cr steel Pipe is a kind of Chinese GB standard alloy steel for engineering and machinery purpose, and one of the most widely used steel grades.
After quenching and tempering treatment, 40Cr steel pipe has good comprehensive mechanical properties, low temperature impact toughness, low notch sensitivity, good hardenability, and high fatigue strength in cold oil. When water cooling, the complicated shape of the parts is prone to cracks, the cold bending plasticity is medium, and the cutting workability after normalizing is good, but the weldability is poor, should be preheated before welding, and is generally used in the state of quenching and tempering.
We retain improving upon and perfecting our items and repair. At the same time, we perform actively to do research and progress for Factory Promotional Seamless Welded Carbon Alloy Steel Q345 20cr 40cr Seamless Steel Pipe, Welcomes all overseas friends and retailers to establish collaboration with us. We’re going to give you with straightforward, top quality and effective services to fulfill your demands.
We retain improving upon and perfecting our items and repair. At the same time, we perform actively to do research and progress for , Our products are widely recognized and trusted by users and can meet continuously changing of economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
|
Grade |
C |
Si |
Mn |
Cr |
Mo |
Ni |
|
40Cr |
0.37-0.44 |
0.17-0.37 |
0.40-0.70 |
0.70-1.00 |
/ |
/ |
|
Grade |
Tensile Strength(MPa) |
Yield Strength(MPa) |
% Elongation in 2 in.(50mm) min |
|
40Cr |
900 min |
660 min |
12 |
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing or Cold Rolling, On line inspection
5. Heat Treatment
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects
Hot Rolled, Annealed, Normalized, Quenched and Tempered
Packaging
1. Bundle packing
2. Beveled end or plain end or varnished as per buyer’s required
3. Marking: as per customer’s requests
4. Painting varnish coating on the pipe
5. Plastic caps at ends
Delivery time
With 15-30 days after full payment receivedWe retain improving upon and perfecting our items and repair. At the same time, we perform actively to do research and progress for Factory Promotional Seamless Welded Carbon Alloy Steel Q345 20cr 40cr Seamless Steel Pipe, Welcomes all overseas friends and retailers to establish collaboration with us. We’re going to give you with straightforward, top quality and effective services to fulfill your demands.
Factory Promotional Seamless Steel Pipe and Steel, Our products are widely recognized and trusted by users and can meet continuously changing of economic and social needs. We welcome new and old customers from all walks of life to contact us for future business relationships and mutual success!
