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Hot Rolled Seamless Steel Tube

Short Description:

Process: bending, welding, uncoiling, punching, cutting, M

Outer diameter (Od) : 3-1220mm

Thickness: 0.5-50 mm

Standard: ASTM, AISI, GB, JIS, DIN, EN

Usage: pipeline transportation, boiler pipeline, hydraulic/automobile pipeline, machinery industry

Mode of transportation: sea or air

Packing: standard export packing


Product Detail

Product Tags

Hot Rolled Seamless Steel Tube, Hot rolling is relative to cold rolling, cold rolling is rolling below the recrystallization temperature, and hot rolling is rolling above the recrystallization temperature.

Hot Rolled Seamless Steel Tube, Advantages

It can destroy the casting structure of steel ingot, refine the grain size of steel, and eliminate the defects of microstructure, so that the steel structure is compacted and the mechanical properties are improved. This improvement is mainly reflected in the rolling direction, so that the steel is no longer isotropic to a certain extent. Bubbles, cracks and looseness formed during casting can also be welded under high temperature and pressure.

Classification

Hot Rolled Seamless Steel Tube, It is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, geological steel pipe and other steel pipe.

Cold rolled (dial) seamless steel pipe in addition to general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipe, also includes carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless steel pipe, special-shaped steel pipe. The outer diameter of hot rolled seamless pipe is generally greater than 32mm and the wall thickness is 2.5-75mm. The outer diameter of cold rolled seamless steel pipe can reach 6mm and the wall thickness can reach 0.25mm. The outer diameter of thin-walled pipe can reach 5mm and the wall thickness is less than 0.25mm.

General seamless steel pipe: it is made of 10, 20, 30, 35, 45 and other high-quality carbon bonded steel 16Mn, 5MnV and other low alloy structural steel or 40Cr, 30CrMnSi, 45Mn2, 40MnB and other alloy steel hot rolled or cold rolled. 10, 20 and other low carbon steel manufacturing seamless pipe is mainly used for fluid pipeline. 45, 40Cr and other medium carbon steel made of seamless pipe to manufacture mechanical parts, such as cars, tractors stressed parts. The general use of seamless steel pipe to ensure the strength and flattening test. Hot rolled steel pipes are delivered in hot rolled or heat treated condition. Cold rolled delivery is heat - treated.

Allowable deviation of normalized outer diameter

D1 ±1.5%, minimum ± 0.75mm

D2 plus or minus 1.0%. Minimum + / - 0.50 mm

D3 + / - 0.75%. Minimum + / - 0.30 mm

D4 + / - 0.50%. Minimum + / - 0.10 mm

Steel tube weight calculation formula

[(outer diameter - wall thickness)* wall thickness]x0.02466=kg/ m (weight per meter)

Hot Rolled Seamless Steel Tuben, Functional Purposes

1. The construction category is: under the pipeline transportation is more, building extraction of groundwater, boiler hot water transportation.

2. Mechanical processing, bearing sleeve, processing machinery accessories, etc.

3. Electrical: gas transmission, water power generation fluid pipeline.

4. Wind power plant antistatic pipe, etc.

Specification

Product name Stainless steel pipe/tube
Standard ASME, ASTM, EN ,BS,GB,DIN, JIS etc
Brand 201/202/304/304L/316/316L/ 321/309S/310S/410/420/430
Certificate BV, ISO, CE, SGS etc
Type Seamless & welded
Outter Diameter (OD) 3-1220mm
Thickness 0.5-50mm
Length 6000mm 5800mm 12000mm or Customized
Technique Cold Drawn or Hot Drawn
Surface 2B, No.1, No.4, HL, BA, 8K etc
Application Industry,chemical,electricity,machinery,architecture,decoration,etc.
Packing Standard export sea-worthy packing
Delivery Time 7-15 Working Days after Deposit
TradeTerms FOB, CFR, CIF, EXW
Payment Terms 30%T/T,L/C

Surface Treatment

  Surface   Definition  Application
   No.1  The surface finished by heat treatment and pickling or  processes corresponding there to after hot rolling.  Chemical tank, pipe etc.
   No.3  Those finished by polishing with No.100 to No.120  abrasives  specified in JIS R6001.  Kitchen utensils, Building  construction etc.
   No.4  Those finished by polishing with No.150 to No.180  abrasives  specified in JIS R6001.  Kitchen utensils, Building  construction, Medical equipment  etc.
   2B  Those finished, after cold rolling, by heat treatment,  pickling or  other equivalent treatment and lastly by cold  rolling to given  appropriate luster.  Medical equipment, Food  industry,  Construction material,  Kitchen utensils etc.
   BA  (No.6)  Those processed with bright heat treatment after cold  rolling.  Kitchen utensils, Electric  equipment, Building  construction etc.
   Mirror  (No.8)  Shinning like a mirror  Building construction,  decoration  etc.
   Hairline  Those finished polishing so as to give continuous  polishing  streaks by using abrasive of suitable grain size.  Building Construction etc.

Chemical Composition

Grade C Si Mn P S Ni Cr Mo
201 ≤0 .15 ≤0 .75 5. 5-7. 5 ≤0.06 ≤ 0.03 3.5 -5.5 16 .0 -18.0 -
202 ≤0 .15 ≤l.0 7.5-10.0 ≤0.06 ≤ 0.03 4.0-6.0 17.0-19.0 -
301 ≤0 .15 ≤l.0 ≤2.0 ≤0.045 ≤ 0.03 6.0-8.0 16.0-18.0 -
302 ≤0 .15 ≤1.0 ≤2.0 ≤0.035 ≤ 0.03 8.0-10.0 17.0-19.0 -
304 ≤0 .0.08 ≤1.0 ≤2.0 ≤0.045 ≤ 0.03 8.0-10.5 18.0-20.0 -
304L ≤0.03 ≤1.0 ≤2.0 ≤0.035 ≤ 0.03 9.0-13.0 18.0-20.0 -
309S ≤0.08 ≤1.0 ≤2.0 ≤0.045 ≤ 0.03 12.0-15.0 22.0-24.0 -
310S ≤0.08 ≤1.5 ≤2.0 ≤0.035 ≤ 0.03 19.0-22.0 24.0-26.0
316 ≤0.08 ≤1.0 ≤2.0 ≤0.045 ≤ 0.03 10.0-14.0 16.0-18.0 2.0-
316L ≤0 .03 ≤1.0 ≤2.0 ≤0.045 ≤ 0.03 12.0 - 15.0 16 .0 -1 8.0 2.0 -
321 ≤ 0 .08 ≤1.0 ≤2.0 ≤0.035 ≤ 0.03 9.0 - 13 .0 17.0 -1 9.0 -
630 ≤ 0 .07 ≤1.0 ≤1.0 ≤0.035 ≤ 0.03 3.0-5.0 15.5-17.5 -
631 ≤0.09 ≤1.0 ≤1.0 ≤0.030 ≤0.035 6.50-7.75 16.0-18.0 -
904L ≤ 2 .0 ≤0.045 ≤1.0 ≤0.035 - 23.0·28.0 19.0-23.0 4.0-5.0
2205 ≤0.03 ≤1.0 ≤2.0 ≤0.030 ≤0.02 4.5-6.5 22.0-23.0 3.0-3.5
2507 ≤0.03 ≤0.8 ≤1.2 ≤0.035 ≤0.02 6.0-8.0 24.0-26.0 3.0-5.0
2520 ≤0.08 ≤1.5 ≤2.0 ≤0.045 ≤ 0.03 0.19 -0. 22 0. 24 -0 . 26 -
410 ≤0.15 ≤1.0 ≤1.0 ≤0.035 ≤ 0.03 - 11.5-13.5 -
430 ≤0.1 2 ≤0.75 ≤1.0 ≤ 0.040 ≤ 0.03 ≤0.60 16.0 -18.0 -
Product Name Material Standard Size(mm) Application
Low temperature tube 16MnDG
10MnDG
09DG
09Mn2VDG
06Ni3MoDG
ASTM A333
GB/T18984-
2003
ASTM A333
OD: 25mm~508mm
WT:3mm~100mm
Apply to - 45 ºC ~ 195 ºC low temperature pressure vessel and low temperature heat exchanger pipe
High-pressure boiler tube 20G
ASTMA106B
ASTMA210A
ST45.8-III
GB5310-1995
ASTM SA106
ASTM SA210
DIN17175-79
OD:8-1240*
WT:1-200
Suitable for manufacturing high pressure boiler tube, header, steam pipe, etc
Petroleum cracking tube 10
20
GB9948-2006 OD: 8-630*
WT:1-60
Used in oil refinery furnace tube, heat exchanger tube
Low medium pressure boiler tube 10#
20#
16Mn,Q345
GB3087-2008 OD:8-1240*
WT:1-200
Suitable for manufacturing various structure of low and medium pressure boiler and locomotive boiler
General structure
of the tube
10#,20#,45#,27SiMn
ASTM A53A,B
16Mn,Q345
GB/T8162-
2008
GB/T17396-
1998
ASTM A53
OD:8-1240*
WT:1-200
Apply to the general structure, engineering support, mechanical processing, etc
Oil casing J55,K55,N80,L80
C90,C95,P110
API SPEC 5CT
ISO11960
OD:60-508*
WT:4.24-16.13
Used for extraction of oil or gas in oil Wells casing, used in oil and gas well sidewall

Product Display

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