High Precision Cold Drawn Honed Tube Pipe Stkm16A Stkm17A Stkm17c Carbon Steel Seamless Round Pipe

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: STKM16A STKM17A STKM17C
• Material: Carbon Steel
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Thickness: 4mm-150mm
• Length: 12m
• MOQ: 1 Ton
• Tolerance: ±5%, ±1%
• Delivery Time: 8-14 Days
• Oiled or Non-Oiled: Non-Oiled
• Processing Service: Punching, Bending, Decoiling
• Invoicing: by Actual Weight
• Product Name: Cold Rolled Cold Drawn Precision Steel Pipe/ Tube
• Packages: Sea Worthy Packaging
• Standard: ASTM GB JIS DIN En
• Transport Package: Customized or Regular Shipping According to Custom
• Specification: OD 4-2420mm
• Trademark: MEIDE
• Origin: Shandong, China
• HS Code: 7304519090
• Production Capacity: 200000 Ton/Tons Per Month

Product Description

Product Description

Cold-drawn precision seamless steel pipe is a kind of high precision steel pipe material. The main categories are: precision seamless steel pipe, precision hydraulic seamless steel pipe, cold-drawn precision seamless steel pipe, cold-rolled precision seamless steel pipe, high precision seamless steel pipe, precision bright seamless steel pipe.

Product Name	Precision steel pipe/Hot rolled seamless carbon tube/alloy steel pipe/steel tube
Standard	ASTM A106 ,ASTM A53 ,API5L B ,ASTM A179, ASTM A210 ,ANSI B36.10, GB 5310,GB6479,GB9948,GB/T17396GB 3087, GB/T 8162 ,GB/T8163,
Outer Diameter	4-914mm ( Or customized according to customer requirements )
Wall Thickness	1-150mm ( Or customized according to customer requirements )
Length	6m,12m or as per customer's requirements
Packing	In bundles tied with steel stripes
Payment Term	T/T, L/C at sight
Delivery Time	Within 7-60 days after signing the contract or as your requirement
Delivery condition	Beveled or Plain end with varnish/2PP/2PE/3PE/3PP anticorrosive coatingas per clients confirmation ; With or without protecting caps as percustomer's requirements;with FBE internal coating for water steel pipes.
Material	A53(A,B),A106(A,B),Q345,16Mn, 10# 20#,45# S235JR, 1010,1020,1030,1040,1050,ASTMA252 Gr.2,Gr.3; ST37,ST42,ST52;Gr.B,X42,X46,X52,X56,X60,X65,X70, 4140 4120 4130 4142 35CrMo 42CrMo 1033 1320 1330 1527 1340 1345 20Mn 35Mn 40Mn 20Mn2 35Mn2 5115 5120 5135 5140 5145 5150 20Cr 30Cr 35Cr 40Cr 45Cr 5120  20CrMnTi 8620 20CrNiMo 4340 40CrNiMoA  52100 GCr15  27SiMn 9260 60Si2Mn 9255 55Si2Mn 6150 50CrVA 440C 9Cr18Mo 3140 3135 40CrNi etc
Usage	for petroleum/ natural gas pipeline , for conveying water,drainage,coal gas, mineral slurry and other low-middle pressure liquids. Also for chemical industry, building structure,heat-supply and pile driving projects.
Export to	Canada, USA, Argentina,Peru, Chile, Colombia, Brazil, Venezuela,Malaysia, Singapore, the Czech Republic, Australia, Myanmar, Kenya, South Africa, Spain, Italy, France, England, the Netherlands,Belgium, etc
Certificates	API 5L; ISO9001:2000

Chemical Composition (%)

Material	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
ASTM 4119 GB 12CrMo	0.08-0.15	0.17-0.37	0.4-0.7	0.035	0.035	0.4-0.7	0.3	0.3	0.4-0.55
JIS SCM415 GB 15CrMo	0.12-0.18	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.4-0.55
ASTM 4118 GB 20CrMo	0.17-0.24	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4130 GB 30CrMo	0.26-0.34	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4135 GB 35CrMo	0.32-0.4	0.17-0.37	0.4-0.7	0.035	0.035	0.8-1.1	0.3	0.3	0.15-0.25
ASTM 4140 GB 42CrMo	0.38-0.45	0.17-0.37	0.5-0.8	0.035	0.035	0.9-1.2	0.3	0.3	0.15-0.25
ASTM 4142 GB 42CrMnMo	0.4-0.45	0.15-0.35	0.78-1	0.035	0.04	0.8-1.1	0.25	0.35	0.15-0.25

Mechanical property

Material	Diameter of sample d mm	Heat treatment or condition.	Tensile strength σb Mpa	Point of yield σs Mpa	Ratio of elongation δ %	Reduction of section ψ %	hardness HBW	Shock absorption energy KV2 J
ASTM 4119 GB 12CrMo	d=30	Quenching + tempering	≥410	≥265	≥24	≥60	≤179	≥110
JIS SCM415 GB 15CrMo	d=30	Quenching + tempering	≥440	≥295	≥22	≥60	≤179	≥94
ASTM 4118 GB 20CrMo	d=15	Quenching + tempering	≥885	≥685	≥12	≥50	≤197	≥78
ASTM 4130 GB 30CrMo	d=25	Quenching + tempering	≥930	≥785	≥12	≥50	≤229	≥63
ASTM 4135 GB 35CrMo	d=25	Quenching + tempering	≥980	≥835	≥12	≥45	≤229	≥63
ASTM 4140     GB  42CrMo	d=25	Quenching + tempering	≥1080	≥930	≥12	≥45	≤217	≥63

Product specification

Specification: outer diameter of hot-rolled pipe is 32~630mm. The wall thickness is 2.5~75mm. The outer diameter of cold rolled (cold drawn) pipe is 5~200mm. The wall thickness is 2.5~12mm.
Appearance quality: the internal and external surfaces of steel pipes shall be free of cracks, folds, folds, delamination, hairlines and scabs. These defects shall be completely removed, and the wall thickness and outer diameter shall not exceed the negative deviation after removal.
Both ends of the steel pipe shall be cut at right angles and the burrs shall be removed. Gas cutting and hot saw cutting are allowed for steel pipes with wall thickness greater than 20mm. The head may not be cut after the agreement between the supplier and the supplier.

product application

Seamless pipes are widely used. Seamless pipes for general purposes are rolled by ordinary carbon structural steel, low alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipes or structural parts for conveying fluid.
Supply is divided into three types according to different purposes: a. Supply according to chemical composition and mechanical properties; B. Supply according to mechanical properties; C. Supply according to hydraulic test. The steel pipes supplied according to category a and b shall also be subjected to hydraulic test if they are used to bear liquid pressure.
There are many kinds of seamless pipes for special purposes, such as boiler seamless pipes, geological seamless pipes and petroleum seamless pipes.

FAQ

Q:What are the different shapes of tubes?

A:Our tube mill processes precision tubes in a whole range of different shapes and profiles including circular, oval and square tubes. We also manufacture more unusual shapes like rectangular, hexagonal and bespoke profiles created to meet our customers' specifications.

Q:What are precision tubes used for?

A:Due to the advantages of no oxide layer on the inner and outer walls of the precision tube, no leakage under high pressure, high precision, high finish, no deformation during cold bending, flaring, flattening without cracks, etc., it is mainly used to produce pneumatic or hydraulic components.

Q:What are the material standards for precision steel pipes?

A:The international standard for precision tubes is DIN 2391, which adopts European standards. In addition, there are 10#, 20#, 35, 45, 40Cr, 25Mn, 37Mn5, etc.

Q:What are the characteristics of precision steel pipes?

A:a. Precision steel tubes have smaller diameters
   b. Cold-drawn tubes have high precision and good surface finish.
   c. The cross-sectional area of the steel tube is more complex.
   d. Superior performance and higher density

Q:What is the production process of precision steel pipes?

A:Raw material inspection - removal of oxide layer - appearance inspection - heating - hot rolling - pickling and passivation (phosphating) - grinding - lubrication and drying - cold rolling (inside and outside pumping) - degreasing - end cutting - inspection - marking - packaging and storage