GOST 8732-78 Seamless Hot-Worked Steel Pipes 20CH

• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Oiled
• Usage: Pipeline Transport, Boiler Pipe, Oil/Gas Drilling
• Section Shape: Round
• Length: 1-12m
• Thickness: 1.2-9.5mm
• Delivery Time: 15-30 Days After Down Payment
• Process: Cold Draw, Cold Rolled, etc.
• Alloy or Not: Non Alloy
• Standard or Not: Standard
• Secondary or Not: Non Secondary
• Price Term: Fob, CIF, CNF
• Payment: L/C, T/T
• Od: 1/2" to 24"
• Transport Package: in Seaworthy Export Packing
• Specification: ASTM, JIS, En, DIN, GB, Ks
• Trademark: Kingmetal
• Origin: China
• HS Code: 73060000
• Production Capacity: 20000 Tons/Month

Product Description

GOST 8732-78 Seamless Hot-worked Steel Pipes 20Ch
 

GOST 8732-78 Seamless Hot-worked Steel Pipes 20Ch
Standard: GOST 8732-78
Equivalent Standard: ASTM A106, ASTM A53, EN 10216-1, DIN 1629

Material: 20Ch 
Equivalent Material: 20Cr

Chemistry Composition

C, %	Si, %	Mn, %	Cr, %	Ni, %	S, %	P, %	Cu, %
0.17-0.23	0.17-0.37	0.50-0.80	0.70-1.00	0.30 max	0.035 max	0.035 max	0.30 max

Mechanical Properties

Tensile Strength, MPa	Yield Strength, MPa	Elongation, %
431 min	-	16 min

Outside Diameter & Tolerance

Outside Diameter, mm	Tolerance
32≤OD≤50	±0.5mm
51≤OD≤219	±1%

Wall thickness & Tolerance

Wall Thickness, mm	Tolerance, %
3≤OD≤15	+12.5/-15
16≤OD≤30	±12.5
32≤OD≤45	+10/-12.5

GOST 8732-78 applies to hot-worked seamless steel pipes of general purpose, manufactured by outside diameter, wall thickness and length.

Manufacture: the tubes shall be manufactured by cold drawn and hot rolled.
Delivery Condition: heat treated.
Inspection & Test: chemical composition analysis, elongation test, hardness test, flattening test, bending test, flaring test, NDT, surface inspection and dimension check.

Length: 4000mm; 6000mm; 6500mm; 10000mm; 12010mm; and so on.
Max developed length: 30 meters, also U bending, finning, studded process can be provided.
Option: shot blasting on the outside surface to remove mill scale, make the surface matte colour; surface polishing as preparation work done for further processing, for instance finning.

Surface: Black painted,oil coated, Smooth, Bright,etc.

Application:Structural pipe, Fluid pipe, boiler pipe, drill pipe, oil and gas pipe, hydraulic pipe, etc. 

Advantages:
1.30 + years of production experience at your service.
2. The fastest delivery
3. The lowest price
4. Most comprehensive standards and materials for your choice.
5.100% export.
6. Our products EXPORT to Africa, Oceania, mid east, eastern Asia, Western Europe etc.

Why us                                                      
*100% exportation                             
*100% satisfication
*100% inspection  

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