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GB/T 21832 Austenitic-Ferritic (duplex) Grade Stainless Steel Welded Tubes and Pipes Spec: Material:329J3L 1.4462 Size Range:OD:4-1200mm WT:0.3-200mm General Length:3-12m Tolerance: According to the following tables or customers’ request. Mechanical Property No. Unified digital code Steel Grade Recommended heat treatment system Tensile property Hardness Tensile strength Rm/(N/mm2) Non proportional extension strength Rp0.2/(N/mm2) Elongation HBW HRC ≥ ≤ 1 S21953 022Cr19Ni5Mo3S

TORICH GB/T 14975 Seamless Stainless Steel Tubes For Structure Hot Roll Standard: GB/T 14975, ASTM A269 / A269M, ASTM A511 / A511 M Material: 12Cr18Ni9, 06Cr19Ni10, 022Cr19Ni10, 06Cr19Ni10N, 06Cr19Ni9NbN, 022Cr19Ni10N, 06Cr23Ni13, 06Cr25Ni20, 015Cr20Ni18Mo6CuN, 06Cr17Ni12Mo2, 022Cr17Ni12Mo2 Bending: The length of the steel tube should not be greater than 0.15% of the total length of the steel tube and no more than 12mm. The bending degree of the steel pipe per meter should

TORICH GB/T 21832 Austenitic-Ferritic(duplex) Grade Stainless Steel Welded Tubes And Pipes Standard: GB/T 21832, ASTM A789M, ASTM A790M, ASTM A928M Material: 022Cr19Ni5Mo3Si2N, 022Cr22Ni5Mo3N, 022Cr23Ni5Mo3N, 022Cr23Ni4MoCuN, 022Cr25Ni6Mo2N, 022Cr25Ni7Mo3WCuN, 03Cr25Ni6Mo3Cu2N, 022Cr25Ni7Mo4N,022Cr25Ni7Mo4WCuN Bending: The bending degree of the steel pipe should not be more than 1.5 mm/m. Out-of-roundness:The out-of-roundness of the steel pipe should not exceed the allowable

Stainless Steel Clad Pipes for Structural Purpose GB/T 18704 Spec: Material:TP304 , 304 Size Range:OD:4-1200mm WT:0.3-200mm General Length:1-8m Tolerance: According to the following tables or customers’ request. Tolerance of OD Surface delivery condition Nominal outside diameter Tolerance Polishing,Polish (SB,SP) ≤25 ±0.25 ＞25~40 ±0.30 ＞40~50 ±0.35 ＞50~60 ±0.40 ＞60~70 ±0.50 ＞70~80 ±0.60 ＞80 ±1％D Unpolished,Sand blasting(SNB,SS) ≤25 ±0.30 ＞25~50 ±0.40 ＞50 ±1.0％D Tolerance of

Seamless Stainless Steel Pipes for Fluid Transportation GB/T 14976 Spec: Material: Size Range:OD:4-1200mm WT:0.3-200mm General Length:1-12m Tolerance: According to the following tables or customers’ request. Table 1 The Tolerance of Outer Diameter and Wall Thickness Unit:mm Hot rolling(extrusion,expansion) steel tube Cold drawn(rolling)steel tube Diamension Tolerance Diamension Tolerance Ordinary Grade PA High Grade PC Ordinary Grade PA High Grade PC Nominal Outer Diameter D

Seamless Stainless Steel Tubes for Boiler and Heat Exchanger GB/T 13296 Spec: Material:302 Size Range:OD:6-159mm WT:1-14mm General Length:3-12m Tolerance: According to the following tables or customers’ request. Permissible deviation of outside diameter and wall thickness Classification Nominal size Allowable deviation W-H OD ≤140 ±1.25%D ＞140 ±1%D S ≤3 -40%S ＞3~4 -35%S ＞4~5 -33%S ＞5 -28%S W-C OD 6~30 +0.15 -0.20 ＞30~50 ±0.30 ＞50 ±0.75%D S D≤38 +20%S D＞38 -22%S Steel grade

Seamless Stainless Steel Tubes for Structural GB/T 14975 ASTM A269 Spec: Material:302,304,304L,316,316L Size Range:OD:4-1200mm WT:0.3-200mm General Length:1-12m Tolerance: According to the following tables or customers’ request. Table 1 The Tolerance of Nominal Outer Diameter and Wall Thickness Unit:mm Hot Roll(Extrusion,Expansion)Steel Tube Cold Drawn(Roll) Steel Tube Diamension Tolerance Diamension Tolerance Ordinary Level PA High Level PC Ordinary Level PA High Level PC

Product Name:TORICH GB/T13296 304/316 Seamless Stainless Steel Tubes for Boiler and Heat Exchanger Standard:GB/T13296 Size Range: OD: 6-159mm WT: 1-14mm Length: 3-12mm or according to customers' actual application and production. Application:for Boiler and Heat Exchanger Steel Grade:Tp304/316/317/321/347/904/32750/32760 Technology:Hot rolled,cold drawn,cold rolled Characteristic: Good concentricity Good surface quality Good OD and ID tolerance High Precision Stable quality

Product Name: GB/T12770 Material 12Cr18Ni9 019Cr19Mo2NbTi Welded Stainless Steel Tubes for Mechanical Structures Size range: O.D.:3-500mm W.T.:0.5-50mm L:2000-12000mm according to customers' actual application and production. Application : For Mechanical Structures purposes Steel Grade: 12Cr18Ni9,06Cr19Ni10,022Cr19Ni10,06Cr25Ni20,022Cr22Ni5Mo3N,019Cr19Mo2NbTi,06Cr13Al Characteristic: Good concentricity Good surface quality Good OD and ID tolerance High Precision Stable