TY 14-161-200-2002 Seamless cold rolled Steel Tube used for
Material: Steel 10, 20, 35, 45
Size Range: OD: 6-114mm, WT: 1-20mm, Length: 5.8m/6m, maximal
Pipes are made of billet according to GOST 14-21, TY 14-1-1076 or
to other regulations.
Example of symbolic notation record:
Pipe of internal diameter 51 mm, wall thickness 2 mm, fixed 4000
mm, steel grade 10, with heat-treatment according to TY
Pipe ID51x2x4000 steel 10 – heat treatment acc. TY 14-161-200-2002
Pipe outer diameter 26 mm, wall thickness 3 mm, random length,
steel 10 without heat treatment according to TY 14-161-200-2002
Pipe 26x3x2, 5-5.0 steel 10 without heat treatment acc. TY
2. Technical requirements
2.1 Pipes are made from carbon steel grade 10 by GOST 1050 with
decreased content of sulfur - - not more than 0,035%, phosphorus -
not more than 0,035% and total content of sulfur and phosphorus not
more than 0,060%.
Deviations in other components of chemical composition are by GOST
It’s allowed to manufacture pipes from steel with content of sulfur
and phosphorus by GOST 1050 by agreement with a customer.
2.2 Mechanical characteristics of pipes should comply with
requirements, indicated in Table 3.
|Condition of material||Tensile strength N/mm2 (kgs/mm2)|
|Elongation, 5 %||Hardness, HRE|
|Cold-deformed pipes without heat treatment|
|Cold-deformed pipes with heat treatment|
Note: 1. Ultimate resistance for pipes with dimensions 36x2, 39x3,5
mm – 343(35)-441(45) N/mm2 (kgs/mm2).
2. Hardness of pipes with wall thickness 0,75 mm is not controlled.
3. Hardness of pipe’s metal with wall thickness 1,0 mm is measured
on internal surface.
4. Control of hardness is not obligatory on condition that there is
warranty from pipe’s factory of origin.
2.3 On the surface of the pipes cracks, film, flaws, blisters,
sealing, exfoliated oxidized film and rust are not allowed.
Separate small dents, risks, traces of defects cleaning are allowed
if they don’t lead the dimensions of pipes out of the limitations
of negative allowed deviations.
Presence of non-exfoliated oxidized film or change of surface
color, which is the result of heat treatment, can’t be considered a
2.4 Ends of pipes should be cut off at right angles and cleaned
from burrs on external and internal surfaces.
2.5 Pipes, which work under pressure (which should be stipulated in
the order) should endure hydraulic pressure test not less than:
- with heat treatment 1,5 MPa (15 kgs/cm2)
- without heat treatment 2,0 MPa (20 kgs/cm2)
Factory of origin is allowed to guarantee ability of pipes to
endure hydraulic pressure without procedure of tests.
2.6 Pipes, which have been subject to heat treatment, are put to
test of dispensation of conic mandrel with angle of 60 degrees till
internal diameters of pipes with dimensions 36x2, 39x3,5 will
increase for 30 %, and other dimensions – on 25 %.
Pipes with dimensions 5x0,75, 9x1,0; 8x internal 4; 21x internal14,
21xext.16,5 are not put to test of dispensation.
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing or Cold Rolling, On line inspection
5. Heat Treatment
6. Straightening/Cutting to specified length/Finished Measuring
7. Quality Testing in own lab with Tensile Strength, Yield
Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.
1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to
check tube quality.
You need to in charge of Express costs.
2. How about your production capacity?
3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.
4. Where is your factory?
Jiaxing city, 2 hours away from Shanghai.
5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation
will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade
3). Tube Size and Size Tolerance
4). Tube length
6). If any special requirements
6. How about the minimum order quantity?
Normally for one size above 1 ton.
Welcome to contact us! Thanks.