High-precision bright surface thick-walled seamless tube inner diameter 4.4mm, 5.4mm, 5.5mm, 6.3mm, 6.35mm, 6.8mm, 8.03 air gun barrel tube

Product Detail

grade:ST35-ST52Special tube:thick wall tube
Alloy or not:Unalloyedapplication:Hydraulic Tubes, Structural Tubes, Airsoft Barrels, Airsoft Barrel Tubes and Tubing
thickness:0.5 - 6mmCertificate:ISO 9001 TS16949
tolerant:0.02mmstandard:ASTM
payment terms:L/C, Western Union, D/P, D/A, T/T, MoneyGramSurface treatment:black phosphating or galvanized
place of origin; place of origin:Jiangsu, ChinaPackage preview:
Outer diameter:1.5 - 60 mm, 1.5 - 60 mmTo oil or not to oil:no fuel
Middle school or not:non-secondary schoolSteel grade:C45, 4130, 4140, 30CrMo, 42CrMo, ST35, ST45, etc.
Section shape:rounddelivery conditions:BK, GBK, BKW, BKS or NBK
technology:cold drawn, cold drawndelivery time:8-14 days
Certification:TS16949 ISO9001Types of:seamless steel pipe
Processing services:to cut
Product Description

 

 

 

 

Please contact us for the specific model and size, we will give you the best price

 

 

 

Main outer diameter 16mm and 12mm others also available

Pipe size can be designed according to customer requirements

Best hardness and processing ability

Common size

4.5 mm inner diameter 12 mm outer diameter
Inner diameter 5.5mm Outer diameter 12mm
6.03 mm inner diameter 12 mm outer diameter
7.03 mm inner diameter 12 mm outer diameter
8.03 mm inner diameter 12 mm outer diameter
4.5 mm inner diameter 16 mm outer diameter
5.4 mm inner diameter 16 mm outer diameter
5.45 mm inner diameter 16 mm outer diameter
5.5 mm inner diameter 16 mm outer diameter
5.6 mm inner diameter 16 mm outer diameter
5.8 mm inner diameter 16 mm outer diameter
6.03 mm inner diameter 16 mm outer diameter
6.25 mm inner diameter 16 mm outer diameter
6.3 mm inner diameter 16 mm outer diameter
6.35 mm inner diameter 16 mm outer diameter
6.5 mm inner diameter 16 mm outer diameter
6.8 mm inner diameter 16 mm outer diameter
7.03 mm inner diameter 16 mm outer diameter
8.03 mm inner diameter 16 mm outer diameter
8.5 mm inner diameter 16 mm outer diameter
8.6 mm inner diameter 16 mm outer diameter
9.03 mm inner diameter 16 mm outer diameter
10.03 mm inner diameter 16 mm outer diameter
12.03 mm inner diameter 16 mm outer diameter


 

Other according to customer requirements

ID tolerance can be controlled within +/-0.02

Shiny interior and exterior surfaces

Steel type: S45C, 4130, 4140, 30CrMo, 42CrMo, 42CrMo4, etc.

Good quality tubing consumes less buttons when grooving

special production process

 

 

 

 

Other sizes we manufacture:

Outer diameter: 1.5mm-60mm

Wall thickness: 0.3mm to 10mm

 

 

Certificate:

According to EN 10204 3.1

Test items: tensile strength, yield strength, elongation, flattening, flaring chemical analysis eddy current

100% testing, 100% dimension and surface inspection Other testing items can be arranged upon request

delivery conditions:

Tubes can be produced under the following delivery conditions:

BK (+C) Cold worked/hard (cold worked, drawn).

There is no heat treatment after the last cold forming process.

 

BKW (+LC) Cold Worked/Soft (Slightly Cold Worked)

After the final heat treatment, light finishing (cold drawing) is carried out.

 

BKS (+SR) Cold working/stress relief annealing.

After the final cold forming process, the tube is stress relieved annealed.

 

GBK (+A) annealed.

After the final cold forming process, the tube is annealed in a controlled atmosphere.

NBK (+N) normalization. (Main concern)

After the final cold forming process, the tube is annealed above the upper transformation point in a controlled atmosphere

 

Product Description
 

Some related steel samples

National standard

TOCT

ASTM

bachelor

JIS

NF

industry standard

10F

 

1010

040A10

 

XC10

 

10

10

10,101,012

045M10

S10C

XC10

C10,CK10

20

20

1020

050A20

S20C

XC18

C22,CK22

45

45

1045

080M46

S45C

XC45

C45,CK45

30CrMo

30XM

4130

1717COS110

MCU 420

30CD4

 

42CrMo

 

4140

708A42

 

42CD4

42CrMo4

     

708M40

     

35CrMo

35XM

4135

708A37

Microcontroller 3

35CD4

34CrMo4

 

Other grades are also available according to customer requirements and market conditions

 

surface treatment

1. Bare pipe (without coating): bright and smooth, surface roughness 0.2Ra Maximum for special requirements

2. Surface coating

A. Silver plating

B. Yellow galvanized

C. Olive green coating

Layer thickness: 8-20um, salt spray test: 48-150 hours

3. Black Phosphate

application

 

production process

Steel mill bar → physical and chemical inspection → surface treatment → cutting → heating → hot piercing → shelling → pickling and lubrication → cold rolling → heat treatment → pickling and lubrication → cutting → punching → cold drawing → dimension inspection → internal and external surface cleaning → NBK Or GBK→mechanical test→chemical analysis

Anti-rust oil printing → printing → packaging → finished product storage → delivery with quality certificate


1. We use special technology and special skills in the pickling process to deal with the places where wrinkles and gaps are easy to form;
2. The process organization is strict, especially the technical requirements for annealing treatment are strict;
3. In terms of lubrication, we have adopted an internationally advanced treatment process to strictly control the surface quality of the product to prevent surface cracks.

Product equipment

Employees: 80 registered

Capital: RMB 8.2 million

Annual sales: about 600 million yuan

Monthly output: 400Ton

Plant area: about 7000 square meters

Production equipment:

Cold drawn wire

Two heat treatment lines

straight line

polisher

Cutting Machine

other

Testing Equipment

 

Hydraulic universal testing machine for testing tensile strength, yield point, flaring, flattening and elongation

C, S, Si, Mn, P analysis equipment

Hardness testing machine

Metallographic Analyzer

Eddy current ultrasonic nondestructive testing machine

visual inspection table

100% eddy current testing

100% dimensional and surface inspection

Cooperation brand

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