Small Diameter ASTM 4140 Thick Wall Seamless Alloy Round Steel Tube
-
$15.00 / 20 - 99 pieces
$12.00 / 100 - 199 pieces
$8.00 / >=200 pieces - 20 pieces
- Henan Danqiu International Trade Co., Ltd.
- Henan, China
- Mr yin
Product Detail
| Special tube: | thick wall tube | standard: | ASTM |
| Middle school or not: | non-secondary school | Section shape: | round |
| Alloy or not: | Unalloyed | application: | Structural tubes, hydraulic tubes, air gun barrels, air gun barrel tubes and pipes |
| Outer diameter: | 1.5 - 60 mm, 1.5 - 60 mm | Steel grade: | C45, 4130, 4140, 30CrMo, 42CrMo, ST35, ST45, etc. |
| To oil or not to oil: | no fuel | delivery time: | within 7 days |
| Invoicing: | by actual weight | Origin: | Jiangsu, China |
| tolerant: | 0.02mm | Certificate: | ISO 9001 TS16949 |
| Certification: | TS16949 ISO9001 | Package preview: | |
| thickness: | 0.5 - 6mm | payment terms: | L/C, Western Union, T/T |
| Processing services: | to cut | Surface treatment: | black phosphating or galvanized |
| grade: | ST35-ST52 | length: | 60cm |
| technology: | cold drawn, cold drawn | brand: | Dan Qiu |
| delivery conditions: | BK, GBK, BKW, BKS or NBK | type: | seamless steel pipe |
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
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
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.
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
others
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
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