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A369/A369M FPA , FPB , FP1 , FP2 Carbon and Ferritic Alloy Steel Forged and Bored Pipe Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service Testing: Additional Tension Test Additional Flattening or Bend Tests Ultrasonic Tests Hydrostatic Test Metal Structure and Etching Tests TABLE 1 Chemical Requirements Grade Composition FPA FPB FP1 FP2 Carbon 0.25max 0.25max 0.10-0.20 0.10-0.20 Manganese 0.27-0.93 0.29-1.06 0.30-0.80 0.30-0.61 Phosphorus,max 0

Seamless Cold Drawn Alloy Steel Pipe andTube 35CrMo 25CrMo4 for Precision Engineering 35CrMo 25CrMo4 Seamless Alloy steel tubes Size: 5-350mm WT: 0.5-35mm Seamless Alloy steel tubes with Alloy steel 35CrMo 25CrMo4 35CrMo: C: 0.32-0.40 Si: 0.17-0.37 Mn: 0.40-0.70 Cr: 0.80-1.10 Mo: 0.15-0.25 25CrMo4 C: 0.38-0.29 Si: 0.10-0.40 Mn: 0.60-0.90 Cr: 1.9-1.20 Mo: 0.15-0.30 Production method: 1. Hot Rolled 2. Cold drawn 3. Cold rolled Mechanical properties: Tensile strength ≥980 Mpa

Alloy Steel Tubes 41Cr4 40Cr DIN1.7035 Seamless Steel Tubes with alloy steel grade 41Cr440CrDIN1.7035 International equivalent: JIS: SCr440 ASTM: 5140 ISO: 41Cr4 41Cr4DIN1.7035: C:0.42 Si:0.25 Mn:0.70 Cr: 1.05 40Cr: C:0.37-0.44 Si:0.17-0.37 Mn:0.50-0.80 Cr:0.80-1.10 Seamless steel tubes with these steel grade could achieve good mechanical properites with quenching and tempering heat treatment (QT), could also heat treatment with annealed. Application: Gear wheel, axle, shaft,

Alloy Steel Pipe andTube T5 T9 with Hot-finish and Cold-finish production Alloy steel T5 T9 ASTM A213 ASTM A213 Steel tubes with steel grade T5T9 T5: C: ≤0.15 Si: ≤0.50 Mn: 0.30-0.60 P: ≤0.025 S: ≤0.025 Cr: 4.0-6.0 Mo: 0.45-0.65 T9: C: ≤0.15 Si: 0.25-1.0 Mn: 0.30-0.60 P: ≤0.025 S: ≤0.025 Cr: 8.0-10.0 Mo: 0.90-1.10 Other alloy steel grade is avaiable upon agreement!

Alloy Steel Tubes and Pipes 16MnCr5 20MnCr5 20CrMn Alloy steel grade 20MnCr5 equivalent to 20CrMn Steel Tubes with alloy steel grade 20MnCr5: 16MnCr5 C:0.14-0.19, Mn:1.00-1.30, P≤0.035, S≤0.010-0.050, Cr:0.80-1.10, Si≤0.40 20MnCr5 C:0.17-0.22, Mn:1.10-1.50, P≤0.035, S≤0.10-0.050, Cr:1.00-1.30, Si≤0.25 20CrMn C:0.17-0.23, Mn: 0.90-1.20, Cr:1.00-1.30, Si:0.17-0.37 Mechanical Properties: Tensile strength: min 885Mpa Yield strength: min 685Mpa Elongation: min 12% Hardness: max

Alloy Steel Tube Grade GB/T3077 38CrMoAl ISO 41CrAlMo74 Structural steel tubes standard GB/T3077: 38CrMoAl ISO: 41CrAlMo74 GOST: 38X2MOA(38XMOA) DIN: 41CrAlMo7 34CrAlMo5 BS: 905M39 905M31 NF: 40CAD6.12 30CAD6.12 Chemical composition: C :0.35~0.42 Si:0.20~0.45 Mn:0.30~0.60 S :≤0.035 P :≤0.035 Cr:1.35~1.65 Ni:≤0.030 Cu:≤0.030 Mo:0.15~0.25 Tensile strength: σb (MPa):≥980(100) Yield strength:σs (MPa):≥835(85) Elongation:δ5 (%):≥14 ψ (%):≥50 Impact: Akv (J):≥71 αkv (J/cm2):≥88(9)

Alloy steel 10CrMo910 11CrMo910 12CrMo910 DIN17175 EN10216-2 10CrMo9-10 11CrMo9-10 12CrMo-910 For Application of Boilers, Heat Exchangers, Steam Boilers, Pressure Vessels Alloy Steel 10CrMo910 12CrMo910 DIN17175 EN10216-2 standard 10CrMo910: C: 0.08-0.15 Si: 0.50 Mn: 0.40-0.70 P: 0.025 S: 0.020 Cr: 2.0-2.5 Mo: 0.9-1.2 11CrMo910: C: 0.08-0.15 Si: 0.15-0.40 Mn: 0.30-0.70 P: 0.025 S: 0.025 Cr: 2.0-2.5 Mo: 0.9-1.2 12CrMo910: C: 0.10-0.15 Si: 0.30 Mn: 0.30-0.80 P: 0.015 S: 0.015

Alloy steel 4130 4140 for ASTM A519 seamless steel tubes ASTM A519 SEAMLESS STEEL TUBES, by DOM production, with the steel grade of SAE4140 and SAE4130, other alloy steel grade upon customer's agreement.: SAE4130: C: 0.28-0.33% Mn: 0.40-0.60% P max 0.40% S max 0.40% Si: 0.15-0.35% Cr: 0.80-1.10% Mo: 0.15-0.25% SAE4140: C: 0.38-0.43% Mn: 0.75-1.00% P max 0.40% S max 0.40% Si: 0.15-0.35% Cr: 0.80-1.10% Mo: 0.15-0.25% Sizing Method: 1. HF- hot finished 2.CW-cold worked Themal

Alloy steel T11 T22 with SA213 boiler steel tubes standard Alloy steel tube T11 T22 with SA213 boiler steel tubes standard T11: C: 0.05-0.15 Si: 0.50-1.0 Mn: 0.30-0.60 P: 0.025 S: 0.025 Cr: 1.0-1.5 Mo: 0.44-0.65 T22: C: 0.05-0.15 Si: 0.50 Mn: 0.30-0.60 P: 0.025 S: 0.025 Cr: 1.9-2.6 Mo: 0.87-1.13