carbon steel pipe

4 year ago

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4 year

Product details

Product Description

ASTM5140 Seamless Steel Pipe is a kind of round steel with hollow section and no joints around it. It is made of solid pipe blank through perforation, and then made of hot rolling, cold rolling or cold drawing. ASTM5140 Seamless Steel Pipe is compared with round steel and other solid steel, when the bending and torsional strength is the same, the weight of ASTM5140 Seamless Steel Pipe is lighter, which is a kind of economic section steel.

ASTM5140 Seamless Steel Pipe is medium carbon quenched and tempered steel, cold heading die steel. ASTM5140 Seamless Steel Pipe has moderate price and easy processing. After appropriate heat treatment, it can obtain certain toughness, plasticity and wear resistance. Normalizing can promote the refinement of microstructure, close to the equilibrium state, and improve the cutting performance of blank. Tempered at 550 ~ 570 ℃, the steel has the best comprehensive mechanical properties. The hardenability of ASTM5140 Seamless Steel Pipe is higher than that of 45 steel. It is suitable for surface hardening treatment such as high frequency quenching and flame quenching.

Product Specification

Product Name	ASTM5140 Seamless Steel Pipe and Tube
Standard	ASTM5140
Material	Carbon Seamless Steel Pipes
Chemical Composition	C:0.37%~0.44% Si:0.17%~0.37% Mn:0.50%~0.80% Cr:0.80%~1.10% Ni:≤0.30% P:≤0.035% S:≤0.035% Cu:≤0.25% Mo:≤0.10%
Physical Property	Tensile strength（ σ B / MPA): ≥ 810 (when the actual hardness is 25hrc) Yield point（ σ s/MPa）：≥785 Elongation after fracture（ δ 5/%）：≥9 Reduction of area（ ψ/%）： ≥45 Impact absorption energy (aku2 / J): ≥ 47 Brinell hardness (100 / 3000hbw) (annealed or high temperature tempered): ≤ 207
Length	3M,5.8M,6M,6.1M,11.8M,12M or According to customer Requirement
Tolerance	OD :+/-12.5% ,WT:+/-1% ,Length:+/-5cm
Surface	According to customer Requirement
Ends	Plain ends or Bevelled ends with Plastice covers
Application	Widely used in industrial manufacturing and building structures
Weight calculation	Weight Per Meter (kg) = 0.00617 × Diameter × Diameter

Product Display

ERW STEEL PIPES

Production Process

1. Welding is generally carried out in the annealed (normalized) state.

2. Unlimited welding method
3. With large linear energy, the preheating temperature can be appropriately increased. Generally, the preheating temperature and interlayer temperature can be controlled between 250 ~ 300 ℃.
4. The welding material shall ensure that the composition of the deposited metal is basically the same as that of the base metal, such as j107-cr
5. Quenching and tempering heat treatment shall be carried out in time after welding. If it is difficult to carry out quenching and tempering treatment in time, intermediate annealing or holding at a temperature higher than preheating for a period of time can be carried out to eliminate diffused hydrogen and soften the structure. For products with complex structure and many welds, an intermediate annealing can be carried out after welding a certain number of welds.

Product Application

After quenching and tempering, this kind of steel is used to manufacture mechanical parts that bear medium load and medium speed, such as steering knuckle, rear half shaft of automobile, gear, shaft, worm, spline shaft and center sleeve on machine tool; After quenching and medium temperature tempering, it is used to manufacture parts bearing high load, impact and medium speed, such as gear, main shaft, oil pump rotor, sliding block, collar, etc; After quenching and low-temperature tempering, it is used to manufacture parts with heavy load, low impact, wear resistance and solid thickness less than 25mm on the section, such as worm, main shaft, shaft, collar, etc; After quenching and tempering and high-frequency surface quenching, it is used to manufacture parts with high surface hardness and wear resistance without great impact, such as gear, sleeve, shaft, main shaft, crankshaft, spindle, pin, connecting rod, screw, nut, inlet valve, etc. In addition, this steel is also suitable for manufacturing various transmission parts treated by carbonitriding, such as gears and shafts with large diameter and good low temperature toughness.

Packing & Delivery

FAQ

Q: Are you a manufacturer?
A: Yes , we are a ASTM5140 Seamless Steel Pipe manufacturer, We have own factory, which is located in Shandong,China. We have a leading power in producing and exporting hot rolled carbon steel sheet ,cold rolled carbon steel sheet ,galvanized steel and alloy steel plate etc. We promise that we are what you are looking for.
Q:Can we visit your factory ?
A:Warmly welcome once we have your schedule we will pick you up .
Q: Do you have quality control?
A: Yes, we can accept BV, SGS third inspection .
Q: Can you arrange the shipment?
A: Sure, we have permanent freight forwarder who can gain the best price from most ship company and offer professional service.
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 25-35 days if the goods are not in stock, it is according to quantity.
Q:How can we get the offer?
A:Please offer the specification of the product,such as material,size,shape,etc.So we can give the best offer.
Q:Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q: How do you make our business long-term and good relationship ?
A: 1.We keep good quality and competitive price to ensure our customers' benefit.
2.We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.