Low Medium high pressure boiler pipe
Low or Medium pressure boiler seamless steel pipe
Standard
GB3087,ASTMA179，ASTMA106GR.B
Business type
Manufacture
Size
OD 12MM-406MM* WT 1.5MM-25MM * Length: SRL, DRL, fixed length
Application。
Applicatio for heating pipelings,containers,steaming pipeline of low/medium pressure boliers（P＜5.88Mpa,T＜450℃）
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Low Medium high pressure boiler pipe,
1.Usage: high pressure boiler super heater tubes,
reheater tubes, airway the main steam pipes and so on.
2.Kinds: High-pressure,
medium pressure, low pressure, thick-walled, thin-walled, alloy and so on.
3.Grade:20G,20MnG,25MnG,15MoG,20MoG,12Cr1MoVG,
15CrMoVG,12Cr2MoG,12Cr2MoWVTiB,12Cr3MoVSiTiB,
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●Size Tolerances
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Standard
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OD Tolerance (Common grade)
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WT Tolerance（Common grade）
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GB3087
Hot roll
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D≤159mm
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±1.0%(Min ±0.50mm)
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S≤20mm
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+15%-12.5% Min+0.45-0.35mm
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D＞159mm
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±1%
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S＞20mm
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±12.5%
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GB3087
Cold drawn
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10mm＜D≤30mm
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±0.40mm
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30mm＜D≤50mm
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±0.45mm
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1.5mm＜S≤3.0mm
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+15%-10%
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D＞50mm
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±1%
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S＞3.0mm
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+12.5%-10%
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Standard
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OD Tolerance (High grade)
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WT Tolerance（High grade）
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GB3087
Hot roll
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D≤159mm
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0.75%(Min ±0.40mm)
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S≤20mm
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±10%(Min±0.30mm)
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D＞159mm
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±0.90%
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S＞20mm
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±10%
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GB3087
Cold drawn
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10mm＜D≤30mm
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±0.20mm
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30mm＜D≤50mm
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±0.25mm
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1.5mm＜S≤3.0mm
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±10%
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D＞50mm
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±0.75%
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S＞3.0mm
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±10%
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ASTMA179 OD and WT Tolerance according to SA-450/SA-450M）
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Standard
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OD Tolerance
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WT Tolerance
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ASTMA179
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D＜1〞(25.4mm)
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±0.10mm
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S≤11/2〞
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+20%-0%
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1〞＜D≤11/2〞
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±0.15mm
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11/2〞＜D≤2〞
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±0.20mm
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2〞＜D≤21/2〞
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±0.25mm
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21/2〞＜D≤3〞
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±0.30mm
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S＞11/2〞
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+22%-0%
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3〞＜D≤4〞
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±0.38mm
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4〞＜D≤71/2〞
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+0.38-0.64mm
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71/2〞＜D≤9〞
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+0.38-1.14mm
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●Mechanical properties
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Standard
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Steel
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Tensile Strength(MPa)
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Yield strength(MPa)
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Elongation (%)
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GB3087
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10
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335-475
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195
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24
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20
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410-550
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245
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20
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ASTM A179
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SA179
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320
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180
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35
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●Chemical composition: (%):
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Standard
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Steel
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C
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Si
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Mn
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P≤
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S≤
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Cu≤
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Ni≤
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Cr≤
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Mo≤
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V≤
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GB3087
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10
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0.07-0.14
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0.17-0.37
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0.35-0.65
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0.035
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0.035
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0.25
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0.25
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0.15
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/
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20
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0.17-0.24
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0.17-0.37
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0.35-0.65
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0.035
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0.035
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0.25
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0.25
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0.25
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ASTM A179
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SA179
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0.06-0.18
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≤0.25
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0.27-0.63
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0.035
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0.035
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3 Comments
Boiler Tubes ASTM A179 Thchnique: Cold-drawn Size: 8-89*1.5-12mm Type: Seamless .
Cold drawn steel tube Size: OD- 1/8"--3" WT: SCH10s-SCh160 Type: Seamless Delivery Condition: Anti-Oxdation Application: General structure and mechanical purpose Standard: GB/T 8162-2008 Grade of Steel: 10, 20, 35, 45, 40MnZ, 20Cr.
Hot Dip Galvanized Steel Pipe，Outer diameter: 20 ~ 219mm. 2) Wall thickness: 1.0~ 12mm 3) Spec.: Q195, Q215, Q235, Q345 .
Hot Rolled Carbon Boiler Pipe SCH 40.
API 5CT Steel Tube,10#,20#,45#,API N80, API 5L seamless steel tube,OD 25-325mm OD 4-70mm Certificates: API5L,ISO, Payment terms: L/C or T/T. Length:1~15m.
Q195 Q235 Steel Pipe,steel pipe welded steel pipe Thickness: 1.5mm - 4.5mm steel pipe Diameter: 20.00mm - 273.00mm Q235 & Q195 .