Stkm 12A 12b Cold Rolling Method Precision Seamless Steel Tube Hydraulic Tube Automobile Pipe From China Factory

Stkm 12A 12b Cold Rolling Method Precision Seamless Steel Tube Hydraulic Tube Automobile Pipe From China Factory, Find details about China Seamless Steel Tube, Seamless Steel Pipe from Stkm 12A 12b Cold Rolling Method Precision Seamless Steel Tube Hydraulic Tube Automobile Pipe From China Factory

Basic Info.

Model NO.

Outside Diameter from 10mm to 100mm

Section Shape

Round

Size Tolerance for 3-Roller

-0.05/+0.05mm for Both Od and ID

Size Tolerance for 2-Roller

-0.1/+0.1mm for Both Od and ID

Surface Appearance

Smooth and Bright

Rusty Feature

Hard to Get Rusty Indoors

Clients Used for

Metal Insert, Furniture Structure, Fluid Service

Customized Service

Heat Treatment, Short Piece Supply, Chamfer

Length

5-12m Random or Fixed Length or Customized

Trademark

Xinruyi

Transport Package

Wrapped by Steel Strips and Plastic Clothes

Specification

OD 5-100MM X ID 4-98MM

Origin

Shandong, China

Model NO.

Outside Diameter from 10mm to 100mm

Section Shape

Round

Size Tolerance for 3-Roller

-0.05/+0.05mm for Both Od and ID

Size Tolerance for 2-Roller

-0.1/+0.1mm for Both Od and ID

Surface Appearance

Smooth and Bright

Rusty Feature

Hard to Get Rusty Indoors

Clients Used for

Metal Insert, Furniture Structure, Fluid Service

Customized Service

Heat Treatment, Short Piece Supply, Chamfer

Length

5-12m Random or Fixed Length or Customized

Trademark

Xinruyi

Transport Package

Wrapped by Steel Strips and Plastic Clothes

Specification

OD 5-100MM X ID 4-98MM

Origin

Shandong, China

Product Desciption

Company profile

Liaocheng Xinruyi Trading Co., Ltd built in year 2017 with registered capital of 3000, 000RMB, and we have been in the steel products industries for more than 10years. The company is located in Liaocheng City, next to capital of Shandong Province, and it enjoy good transportation environment of 3 hours to nearest port and 1 hour reaching the airport.

As it is well known to all, Liaocheng city is the biggest steel pipe base in North China, with this significant advantage on geography aspect, us company have developed into one modern international trading and exporting company. Our salesmen are trained to get the best and professional skills on doing export trading dealing with various kinds of issues in the trading, which is a base that our buyers can have good buying experience. Till now we can supply the good quality products consisting of and not limit to the following, steel pipes, bars, rock bolts, guardrail composite pipe, guardrail board, color coated steel coils, galvanized coils, steel balls, steel chains, steel plates and steel bearing. Besides we can provides processing procedures for the steel products, like anti-rust protecting, cutting and chamfer, coupling, heat treating, bending, galvanizing, polishing, beveling and so on.

With efforts of Xinruyi People we have the pleasure to serve the clients from more than 20 countries and areas, We earned good reputations from the clients without any claim. We finally become good friends and intimate partners with them.

Looking forward, we get good confidence that we will expand our business scales to more countries and areas, and serve more people in the world. Because we always believe quality of the commodity is the life of company, stability is the essence of quality. Also the integrity in business will help bring the long term business relationship, so it is the code that one company can develop and survive.

Xinruyi is looking forward to the cooperation with you!

Commodity hot-sales features

Cold Rolling Production Process Bright Precision Seamless Steel Pipes is one of our hot-sale commodities, which is newly developed these years. Due to cold rolling products' features like good precision size and bright surface, it is getting more and more attention and acception from cleints. We are giving its magnificent advantages as follows:

Main Advantages of cold rollong precision steel pipes:
A. High precision size and much smaller tolerance, this pipe is produced under cold rolling process method. The pipe OD and ID tolerance can be with -0.1/+0.1mm, and even through our 3-roller machine we can control the pipe OD and ID tolerance within -0.05/+0.05mm. There is no oxide skin layer on both inside and outside surfaces, degree of finish is very well.

B.High precision cold rolling seamless steel pipes have good comprehensive mechanical property. It can bear high pressure, cold bending, expanding, pressing flat without crack, and other complex size change and mechanical handling.

C.High precision cold rolling seamless steel pipes being used largely will help save the steel materials, promote the machining efficiency, reduce the expense and decrease processing time on large extent.
So this kind of pipes are widely as deformed bar connection, automobile components, mechanical engineering parts, hydraulic fittings, bearing, peneumatic components, oil cylinder, boiler equipment and so on.

We would love to give one table to compare the cold rolling precision steel pipes and common hot rolled steel pipes, supposing we need one finished round precision cylinder of finished size OD 55.19mm x ID 42.58mm x Length 1000mm. And we use these two kinds of pipes as the materials.

Comparing Table	cold rolling precision steel pipes	common hot rolled steel pipes
Outside surface bright	Yes	No
Without oxide skin layer	Yes	No
Inside surface smooth	Yes	No
Needing size	55.29x42.48x1000	57x41
Tolerance allowed	-0.1/+0.1 for OD and ID (under 3 rollers -0.05/+0.05)	1% for OD (-0.57/+0.57mm)
Materials weight	7.716kg	9.666kg around
Processing time needed	60minutes	75minutes

From the table we can see cold rolling precision steel pipes have a lot of advantages than the common hot rolled steel pipes.

Materials and grades information

Grade		Designation	Chemical Composition %
			C	Si	Mn	P	S
11	A	STKM 11A	0.12 max.	0.35 max.	0.60 max.	0.040 max.	0.040 max.
12	A B C	STKM 12A STKM 12B STKM 12C	0.20 max.	0.35 max.	0.60 max.	0.040 max.	0.040 max.
13	A B C	STKM 13A STKM 13B STKM 13C	0.25 max.	0.35 max.	0.30 ~0.90	0.040 max.	0.040 max.
14	A B C	STKM 14A STKM 14B STKM 14C	0.30 max.	0.35 max.	0.30 ~1.00	0.040 max.	0.040 max.
15	A B	STKM 15A STKM 15B	0.25 ~0.35	0.35 max.	0.30 ~1.00	0.040 max.	0.040 max.
16	A B	STKM 16A STKM 16B	0.35 ~0.45	0.40 max.	0.40 ~1.00	0.040 max.	0.040 max.
17	A B	STKM 17A STKM 17B	0.45 ~0.55	0.40 max.	0.40 ~1.00	0.040 max.	0.040 max.
18	A B C	STKM 18A STKM 18B STKM 18C	0.18 max.	0.55 max.	1.50 max.	0.040 max.	0.040 max.
cite from JIS G3445-2004 edition

Besides we can supply various other grades of carbon, alloy and stainless steels.

Stock size list

Size list

OD(mm)
WT(mm)

0.5

1.5

2.5

3.5

4.5

5.5

6.5

7.5

8.5

9.5

10.5

11.5

12.5

13.5

14.5

15.5

16.5

17.5

⊙

100

⊙

About is our usual production and supply size list. But we can accept any custom-made sizes you needing, any non-standard size can be customized.

Mill environment and goods pictures show

Packing and shipping condition

Customized and value-added service

Why choose us

Δ More than 10years experience in the steel industry ensuring best ability supplying you best solutions on goods design, processing, transportation, and cost control.

Δ Abundant ready stocks and sizes ensuring you the shortest delivery time.

Δ Quality assured.One MTC sheet issued by us will be presented together with other shipment documents. We accept any quality claim raised within one year.

Δ Customized service help you avoid complex follow-up work, our professional processing on goods itself find you one-stop buying here.

Finally we welcome your kind inquiry! One time cooperation, partners forever!