Heavy Duty Alloy Seamless Pipe By Global Overseas Marketing

With the support of highly experienced professionals, our organization is dedicated Distributor, Supplier & Trading Company of Heavy Duty Alloy Seamless Pipe in Hyderabad, Telangana, India.
Our Alloy seamless pipe is used in manufacturing drilling & mining Equipment mainly DTH Hammers & Drill rods. We can provide clients with seamless pipe according to their needs and specifications.

We have the following seamless pipe regularly in our stock grade is EN19 C used for making DTH Hammers.

85 mm diameter x 10 mm thickness
102mm diameter x 15 mm thickness
108mm diameter x15 mm thickness
110mm diameter x 15mm thickness
152mm diameter x 18 mm thickness

Length: standard length used for making hammers
1.42CrMo4 Alloy Steel Supply Range

42CrMo4 Round bar Sizes: 10mm 3000mm
Steel 42CrMo4 Flat and Plate: 10mm-1500mm thickness x 200-3000mm width
Other steel shape and sizes available according to your requirements.

3.42CrMo4 Alloy Steel Chemical Composition
C(42CrMo4/1.7225)MnSiPSCrMo
0.38-0.450.60-0.900.40 (max)0.035(max)0.035 (max)0.90-1.200.15-0.30


4. DIN 42CrMo4 Alloy Steel Mechanical Properties
Size (mm)Yield stress
Rp0.2,N/nn2, min.

Ultimate tensile Stress,Rm,N/nn2Elongation
A5,%, min

Hardness HBToughness
KV, Joule, min.

<407501000-120011295-35535 at 20A A C
40-95650900-110012265-32535 at 20A A C
>95550800-95013235-29535 at 20A A C


5. Heat Treatment of 42CrMo4 Steels
Annealing of 42CrMo4 Steels
Heat steel 42CrMo4 forged steel slowly and thoroughly to 800-850A A C;

Cool slowly in the furnace to the temperature 480A A ;

Complete annealing the steel in the air.



Quenched and Tempered (Q+T)
Heat 42CrMo4 steel slowly to 880A A C;

Soak at this temperature then quench in oil;

Temper as soon as 42CrMo4 steel reach room temperature (20A A C);

Heat uniformly to the suitable temperature of 560A A C;

Withdraw the 42CrMo4 material from the furnace and cool in the air.

6. Forging of 42CrMo4 Alloy Steel
Preheat 42CrMo4 engineering steel uniformly and slowly;

Increase the forging temperature up to 1150-1200A A C.

Always keep the forging temperature above at least 850A A C

7.Weldability
Engineering steel 42CrMo4 has only limited weldability. Preheating to 200-300A A C is strongly recommended; the upper limit should not be exceeded because of risk for deterioration of the chrome layer.

Alloy steel 42CrMo4 can be friction welded. However, precautions are necessary so as to limit the formation of undesirable microstructures in the welded zone.

8.Application of 42CrMo4 Alloy Steels
EN 42CrMo4 alloy steel is widely used for engineering steel purpose, such as: making various kinds of machinery, automobile, mining spare part, the gearwheel of the engine, the driving gear of supercharger, the connecting rob, the pinchock under the high pressure, parts for power train applications, cold formed fastener components, shafts, gears, drill collars for the oil exploration, etc.