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SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe
Specifications
Brand Name :
Hengxin Zhicheng
Model Number :
High-Pressure Boiler Tube
Certification :
ASTM, GB, ISO, etc.
Place of Origin :
CHINA
MOQ :
1 PCE
Price :
Negotiation
Payment Terms :
L/C, T/T
Delivery Time :
10 to 35 days
Packaging Details :
Default bare pipe bundling, or packaging according to customer requirements, such as oil cloth packaging, wooden box packaging, frame packaging
Description

SA106B Seamless Steel Pipe

ASTM A106 Grade B seamless steel pipe is a cornerstone of high-temperature pressure conveyance systems across global industries. This article provides a detailed overview of its specification, chemical and mechanical properties, manufacturing process, key applications, and the advantages that make it a preferred choice for critical service.

ASTM A106 is a standard specification from ASTM International (formerly the American Society for Testing and Materials) for seamless carbon steel pipe designed for high-temperature service. It is predominantly used in pipelines and pressure vessels where operating conditions involve elevated temperatures. The standard covers three grades: A, B, and C, with Grade B being the most commonly specified due to its optimal balance of strength, ductility, and cost-effectiveness. This pipe is intended for bending, flanging, and other coiling operations, making it exceptionally versatile.

Dimensional tolerance:
Pipe types Outer-caliber(D) Thickness(S)
Pipe outer-caliber(mm) Allowable warp(mm) Pipe thickness(mm) Allowable warp(mm)
Hot-rolled pipes ＞219～457 ±1.0％ ≤20 －10％,＋12.5％
＞20～40 －10％,＋10％
＞457～1066 ±0.9％ ＞40～70 －7％,＋9％
＞70～120 －6％,＋8％
Mechanical Properties:
Standards Steel pipes No. Tensile strength(MPa) Bend strength(MPa) Elongation(％) Impact energy(J) Hardness
GB3087 10 335～475 ≥195 ≥24 /
20 410～550 ≥245 ≥20 /
GB5310 20G 410～550 ≥245 ≥24 ≥35 /
20MnG ≥415 ≥240 ≥22 ≥35 /
25MnG ≥485 ≥275 ≥20 ≥35 /
15CrMoG 440～640 ≥235 ≥21 ≥35 /
12Cr2MoG 450～600 ≥280 ≥20 ≥35 /
12Cr1MoVG 470～640 ≥255 ≥21 ≥35 /
10Cr9Mo1VNb ≥585 ≥415 ≥20 ≥35 /
ASME SA106 SA106B ≥415 ≥240 ≥22 ≥35 /
SA106C ≥485 ≥275 ≥20 ≥35 /
ASME SA333 SA333Ⅰ级 ≥380 ≥205 ≥28 －45≥18 /
ASME SA335 SA335 P11 ≥415 ≥205 ≥22 ≥35 ≤163HB
SA335 P12 ≥415 ≥220 ≥22 ≥35 ≤163HB
SA335 P22 ≥415 ≥205 ≥22 ≥35 ≤163HB
SA335 P5 ≥415 ≥205 ≥22 ≥35 ≤187HB
SA335 P91 585～760 ≥415 ≥20 ≥35 ≤250HB
SA335 P92 ≥620 ≥440 ≥20 ≥35 250HB
DIN17175 ST45.8/Ⅲ 410～530 ≥255 ≥21 ≥27(DVM) /
15Mo3 450～600 ≥270 ≥22 ≥34(DVM) /
13CrMo44 440～590 ≥290 ≥22 ≥34(DVM) /
10CrMo910 480～630 ≥280 ≥20 ≥34(DVM) /
EN10216-2 15NiCuMoNb5-6-4 (WB36) 610～780 ≥440 ≥19 ≥40 /

Chemical composition:

Standards Steel pipes No. Chemical composition(%)
C Si Mn P S Cr Mo Cu Ni V Al W Nb N
GB3087 10 0.07～0.13 0.17～0.37 0.38～0.65 ≤0.030 ≤0.030 0.3～0.65 / ≤0.25 ≤0.30 / /
20 0.17～0.23 0.17～0.37 0.38～0.65 ≤0.030 ≤0.030 0.3～0.65 / ≤0.25 ≤0.30 / /
GB5310 20G 0.17～0.24 0.17～0.37 0.35～0.65 ≤0.030 ≤0.030 ≤0.25 ≤0.15 ≤0.20 ≤0.25 ≤0.08
20MnG 0.17～0.25 0.17～0.37 0.70～1.00 ≤0.030 ≤0.030 ≤0.25 ≤0.15 ≤0.20 ≤0.25 ≤0.08
25MnG 0.23～0.27 0.17～0.37 0.70～1.00 ≤0.030 ≤0.030 ≤0.25 ≤0.15 ≤0.20 ≤0.25 ≤0.08
15CrMo 0.12～0.18 0.17～0.37 0.40～0.70 ≤0.030 ≤0.030 0.80～1.10 0.40～0.55 ≤0.20 ≤0.30
12Cr2MoG 0.08～0.15 ≤0.50 0.40～0.70 ≤0.030 ≤0.030 2.00～2.50 0.90～1.20 ≤0.20 ≤0.30
12Cr1MoV 0.08～0.15 0.17～0.37 0.40～0.70 ≤0.030 ≤0.030 0.90～1.20 0.25～0.35 ≤0.20 ≤0.30 0.15～0.30
10Cr9Mo1VNb 0.08～0.12 0.20～0.50 0.30～0.60 ≤0.020 ≤0.010 8.00～9.50 0.85～1.05 ≤0.20 ≤0.40 0.18～0.25 ≤0.015 0.06～0.10 0.03～0.07
ASME SA106 SA106B 0.17～0.25 ≥0.1 0.70～1.00 ≤0.030 ≤0.030
SA106C 0.23～0.27 ≥0.1 0.70～1.00 ≤0.030 ≤0.030
ASME SA333 SA333Ⅰ 0.09～0.12 / 0.7～1.00 ≤0.020 ≤0.010
SA333Ⅵ 0.09～0.12 ≥0.1 0.9～1.10 ≤0.020 ≤0.010
ASME SA335 SA335 P11 0.05～0.15 0.50～1.0 0.30～0.60 ≤0.030 ≤0.030 1.00～1.50 0.50～1.00
SA335 P12 0.05～0.15 ≤0.50 0.30～0.61 ≤0.030 ≤0.030 0.80～1.25 0.44～0.65
SA335 P22 0.05～0.15 ≤0.50 0.30～0.60 ≤0.030 ≤0.030 1.90～2.60 0.87～1.13
SA335 P5 ≤0.15 ≤0.50 0.30～0.60 ≤0.030 ≤0.030 4.00/
6.00		 0.45/
0.65
SA335 P91 0.08～0.12 0.20～0.50 0.30～0.60 ≤0.020 ≤0.010 8.00～9.50 0.85～1.05 ≤0.40 0.18～0.25 ≤0.015 0.06～0.10 0.03～0.07
SA335 P92 0.07～0.13 ≤0.50 0.30～0.60 ≤0.020 ≤0.010 8.50～9.50 0.30～0.60 0.30～0.60 ≤0.40 0.15～0.25 ≤0.015 1.50～2.00 0.04～0.09 0.03～0.07
DIN 17175 ST45.8/Ⅲ ≤0.21 0.10～0.35 0.40～1.20 ≤0.040 ≤0.040 ≤0.30
15Mo3 0.12～0.20 0.10～0.35 0.40～0.80 ≤0.035 ≤0.035 0.25～0.35
13CrMo44 0.10～0.18 0.10～0.35 0.40～0.70 ≤0.035 ≤0.035 0.70～1.10 0.45～0.65
10CrMo910 0.08～0.15 ≤0.50 0.30～0.70 ≤0.025 ≤0.020 2.00～2.50 0.90～1.10 ≤0.30 ≤0.30 ≤0.015
EN1021 6-2 15NiCuMoNb5-6-4 (WB36) ≤0.17 0.25～0.50 0.80～1.20 ≤0.025 ≤0.020 ≤0.30 0.25～0.50 0.50～0.80 1.00～1.30 ≤0.05 0.015～0.045

Chemical Composition

The performance of A106B pipe is fundamentally dictated by its chemical composition, which is strictly controlled by the ASTM A106 standard. Key elements include:

  • Carbon (C): 0.30% max. Provides strength and hardness.
  • Manganese (Mn): 0.29 – 1.06%. Enhances strength and hardenability.
  • Phosphorus (P): 0.035% max. Impurity that reduces ductility and toughness.
  • Sulfur (S): 0.035% max. Impurity that causes brittleness.
  • Silicon (Si): 0.10% min. Adds strength and deoxidizes the steel.
  • The controlled low levels of impurities (S and P) and the balance of strengthening elements ensure reliable performance under stress and high heat.

Mechanical Properties

A106 Grade B pipe must meet minimum mechanical property requirements, which are verified through standardized testing:

  • Tensile Strength: 415 MPa (60,200 psi) minimum.
  • Yield Strength: 240 MPa (35,000 psi) minimum.
  • Elongation: The minimum elongation in 2 inches is a function of the pipe wall thickness but is typically around 20-30%, indicating good ductility and the ability to deform without fracturing.
  • These properties ensure the pipe can withstand the internal pressures and mechanical loads encountered in service.

Manufacturing Process

The "seamless" designation is crucial. These pipes are manufactured without a welded seam through a process that begins with a solid cylindrical steel billet. The billet is heated to a high temperature and then pierced through the center with a mandrel to create a hollow shell. This shell is subsequently elongated and rolled over a mandrel and stretched to achieve the desired diameter, wall thickness, and length. This homogeneous structure provides uniform strength around the entire circumference, eliminating the weak point that a weld seam can represent in high-pressure applications. The final pipes are then heat-treated (normalized) to refine the grain structure and enhance mechanical properties.

SA106B Seamless Steel PipeSA106B Seamless Steel PipeSA106B Seamless Steel Pipe

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Product Detail
Brand Name :
Hengxin Zhicheng
Model Number :
High-Pressure Boiler Tube
Certification :
ASTM, GB, ISO, etc.
Place of Origin :
CHINA
MOQ :
1 PCE
Price :
Negotiation
Contact Supplier
SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe
SA106B Seamless Steel Pipe

Wuxi Hengxin Zhicheng International Trade Co., LTD

Verified Supplier
1 Years
wuxi
Since 2014
Business Type :
Manufacturer, Trading Company
Main Products :
Mechanical Structure Pipe, Conveyor Pipe, Precision Tube
Total Annual :
30000000-50000000
Employee Number :
<300
Certification Level :
Verified Supplier
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