• ASME SA-372 seamless carbon and alloy steel pipe for thin-walled boilers and pressure vessels use

ASME SA-372 includes three types of carbon steel and six types of alloy steel. This specification covers thin-walled seamless steel pipe used for boilers and and pressure vessels. Grade C is equivalent to 37Mn, and Grade E is equivalent to 30CrMo. Both latter materials belongs to GB/T18248.

Specifications

Standard ASME SA-372
Steel Grade/Material Grade A,Grade B,Grade C,Grade D,Grade E,Grade F,Grade G,Grade H,Grade J,Grade K.Grade L,Grade M
Outer Diameter(OD) 1.5”-28”(38mm-720mm)
Wall Thickness(WT) 0.102”-2.362”(2.6mm-60mm)
Length 5.8-16m or OEM
Packing Plastic cap or bundling
Section Shape Round
Technique Seamless hot rolled
Application Used for boilers and and pressure vessels
Place of Origin China
MOQ 25 ton
Transportation 1.Sea port:Tianjin Xingang port,Qingdao port,Shanghai Luojing port
→America,Europe,Africa,Middle East,India, Pakistan,Japan,Korea,
Australia…(shipping)

2.Land port:Alataw pass port(Пограничный пункт “Алашанькоу”)
Khorgos port(Пограничный пункт “Хоргос”)
→East Asia, Uzbekistan,Kazakhstan,Kyrgyzstan…(Train)
Erlianhot port→Mongolia(Train and Truck)
Manchuria port→Russia(Train and Truck)
Chemical Composition(%)
Grade C Si Mn P S Cr Mo V Ni
Grade A ≤0.30 0.15-0.35 ≤1.0 ≤0.025 ≤0.025 — — — —
Grade B ≤1.0 0.15-0.35 ≤1.35 ≤0.025 ≤0.025 — — — —
Grade C ≤0.48 0.15-0.35 ≤1.65 ≤0.025 ≤0.025 — — — —
Grade D 0.40-0.50 0.15-0.35 1.40-1.80 ≤0.025 ≤0.025 — 0.17-0.27 — —
Grade E (Classes 55,65,70) 0.25-0.35 0.15-0.35 0.40-0.90 ≤0.025 ≤0.025 0.80-1.15 0.15-0.25 — —
Grade F (Classes 55,65,70) 0.30-0.40 0.15-0.35 0.70-1.00 ≤0.025 ≤0.025 0.80-1.15 0.15-0.25 — —
Grade G (Classes 55,65,70) 0.25-0.35 0.15-0.35 0.70-1.00 ≤0.025 ≤0.025 0.40-0.65 0.15-0.25 — —
Grade H (Classes 55,65,70) 0.30-0.40 0.15-0.35 0.75-1.05 ≤0.025 ≤0.025 0.40-0.65 0.15-0.25 — —
Grade J (Classes 55,65,70,110) 0.35-0.50 0.15-0.35 0.75-1.05 ≤0.025 ≤0.025 0.80-1.15 0.15-0.25 — —
Grade K ≤0.18 0.15-0.35 0.10-0.40 ≤0.025 ≤0.025 1.00-1.80 0.20-0.60 — 2.0-3.3
Grade L 0.38-0.43 0.15-0.35 0.60-0.80 ≤0.025 ≤0.025 0.70-0.90 0.20-0.30 — 1.65-2.00
Grade M

(Classes 85 and 100)

 ≤0.23 ≤0.3 0.20-0.40 ≤0.020 ≤0.020 1.50-2.00 0.40-0.60 ≤0.08 2.8-3.9
Mechanical Properties
Grade Tensile Strength,

ksi (MPa)

 Yield Strength

(0.2% Offset),

Ksi (MPa),min

 Elongation
in 2 in.

(50mm)

min(%)

 Hardness,

HB,min
Grade A 60-85(415-585) 35(240) 20 121
Grade B 75-100(515-690) 45 18 156
Grade C 90-115(620-795) 55(380) 15 187
Grade D 1005-130(725-895) 65(450) 15 217
Grade E,F,G,H,J (Class 55) 85-110(545-760) 55(380) 20 179
Grade

E,F,G,H,J (Class 65)

 105-130(725-895) 65(450） 19 217
Grade E,F,G,H,J  (Class 70) 120-145(825-1000) 70(485) 18 248
Grade J(Class 110) 135-160(930-1100) 110(760) 15 277
Grade K 100-125(690-860) 80(550) 20 207
Grade L 155-180(1070-1240) 135(930) 12 311
Grade M (Class 85) 105-130(725-895) 85(585) 18 217
Grade M (Class 100) 120-145(825-1000) 100(690) 16 248

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