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GB/T5312 Carbon And Carbon-Manganese Seamless Steel Tubes For Ship Seamless Steel TubesSteel Grade/Steel Material:10#20#45#16Mn A106 Gr A,B,A53 Gr B,ASTM A179,A315B,A335 P11,A335 P22, 12CrMo 15CrMo 20CrMo 42CrMo 12Cr1Mov 10CrMo 910A 355P 22 STF A25Steel pipe standard:1. ASTM:ASTM A106GR.A; ASTM A106GR.B; ASTM A53GR.A; ASTM A53GR.B; ASTM A333; ASTM A334; ASTM A192; ASTM A210;2. JIS: G3452;G3457; G3454; G3456; G3461; G3454; G3455; STPG38; STPG38; STS38; STPT42; STB42; STS42;

ISO683-17 Cold Drawn Seamless Steel Tube Bearing Steel Pipe GCr15 100Cr6 from TORICH Products Description: ISO683-17 Cold Drawn Seamless Tube Bearing Steel Pipe GCr15 100Cr6 Steel Grade/Steel Material: Steel Grade mass fraction % C Si Mn P S Cr Mo GCr15 0.95-1.05 0.15-0.35 0.20-0.40 ≤0.027 ≤0.020 1.30-1.65 ≤0.10 100Cr6 0.93-1.05 0.15-0.35 0.25-0.45 ≤0.025 ≤0.015 1.35-1.60 ≤0.10 100CrMnSi6-4 0.93-1.05 0.45-0.75 1.00-1.20 ≤0.025 ≤0.015 1.40-1.65 ≤0.10 100CrMnSi6-6 0.93-1.05 0

Precision Seamless Cold Drawn Hydraulic Cylinder Steel Tubes EN10305-1 E235 E355 +Cc +LCc +SR +Ad +N NBK Standard: EN10305-1 Seamless Cold Drawn/Rolling Steel Tubes Steel tubes for precision applications. Technical delivery conditions. Applications: Telescopic Cylinders/Hydraulic Cylinders/Auto shock absorber innder cylinder Size range: O.D.:6-350mm W.T.:1-35mm L:max12000mm Standard Steel Grade C Si Mn P S EN 10305-1 E215 ≤0.10 ≤0.05 ≤0.70 ≤0.025 ≤0.025 E235 ≤0.17 ≤0.35 ≤1.20

4130 Carbon Steel Seamless Pipe Size: OD: 13.7 – 711mm. Wall Thickness: 1.0 – 40mm. Length: 3-12m or according to clients` requirements. Standard : ASTM A53,BS1387-85,GB/T3091-08,JIS-G3444 Usage: Used For Structure, Accessorize And Construction Ends 1) Plain 2) Beveled 3) Thread End protector 1) Plastic pipe cap 2) Iron protector Coatings PE; 3PE; FBE; black varnish; anti rust oiled; beveled or plain ends; plastic end caps Technique Hot rolled/cold rolled Test inspections

Cold drawn or cold-rolled precision seamless steel tubes Relative standard : GB/T222 permissible tolerance for chemical composition of steel products. GB/T223.5 Steel and iron-Determination of acid-soluble silicon and total silicon content-Reduced molybdosilicate spectro photometric method(GB/T223.5-2008,ISO 4829-1:1986,ISO 4829-2:1988,MOD) Mechanical properties Steel grade 10# 20# 35# 45# Q345B Steel grade deliver conditions +C +LC +SR +A +N Rm/Mpa A/% Rm/Mpa A/% Rm/Mpa ReH

Seamless Steel Tubes and Pipes for High Pressure Boiler GB 5310 Spec: Material:20G 20MnG 25MnG Size Range:OD:4-1200mm WT:0.3-200mm General Length:4-12.5m Tolerance: According to the following tables or customers’ request. Producing method Size Tolerance General High grade Hot rolling (extrude) D 54~325 S≤35 ±0.75% ±0.5% S>35 ±1% ±0.75% >325 ±1% ±0.75% S ≤4.0 ±0.45 ±0.35 >4.0~20 ±12.5%-10% ±10% >20 D25.4~40 ±0.20 _ >40~50 ±0.25 _ >50~60 ±0.30 _ >60 ±0.5% _ S ≤3.0 ±0.3 ±0.2 &g

GB 3087 Seamless Steel Tubes for Low and Medium Pressure Boiler Characteristic: Good concentricity Good surface quality Good OD and ID tolerance High Precision Stable quality Smooth Roughness TORICH QUALITY ASSURANCE Spec: Material:10# 20# STB33/42 st35.8 Size Range:OD:4-1200mm WT:0.3-200mm General Length:4-12.5m Tolerance: According to the following tables or customers’ request. Tolerance of the OD &WT: OD Tolerance: Production Method OD Tolerance Hot Rolling(Extrusion) ±1%

GB/T 8162 Material 10# 45# 20Mn 25Mn Q235 Q345 Seamless Steel Tubes for Structural Purpose Material:10# 20# 45# 20Mn 25Mn Q235 Q345 Size Range: OD:3-1200mm, WT:0.5-200mm, General Length:3-12m Tolerance: According to the following tables or customers’ request. Characteristic: Good concentricity Good OD and ID tolerance High Precision Stable quality Smooth Roughness TORICH QUALITY ASSURANCE Tolerance of the OD &WT: OD Tolerance: Production Method OD Tolerance Hot Rolling

A 556/A 556M Cold-Drawn Carbon Feedwater Heater Seamless steel Tubes 1. Referenced Documents 1.1 ASTM Standards: A 450/A 450M Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes E 30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron 2. Manufacture 2.1 Manufacture—Tubes shall be made by the seamless process and shall be cold drawn. 2.2 Heat Treatment: 2.2.1 Cold-drawn tubes shall be heat