Thin Wall Rectangular Pipe
O.D:10mm-114.3mm
W.T:1.6mm-14mm
Executive Standard :API SPEC 5L

Specifications:

1) The standard of pipe: ISO 2531 - 1998, EN545-2002 , K9

2) Effective length: 6M when using bulk shipment way, or about 5.5M or 5.7M when
in 20' container shipment way

3) Inner cement line: Portland cement line as per ISO4179

4) Zinc coating: at least 130gsm as per ISO 8179

5) Bitumen painting: at least 70um as per ISO 8179

6) Gaskets are NBR rubber, natural rubber, SBR rubber or EPDM rubber tightness ring as per ISO4633

7) DN 80 - 1,600 mm

8) High strength, lighter than gray iron, good corrosion resistance, no furring,
small flow resistance, easy fixing, long life time

9) Checked by automatic inspection equipment

10) Composition: a) C: 3.4 - 3.7% b) Si: 2.0 - 2.4% c) P: <0.08% d) S: <0.015

11) Pull strength: >420MPa

12) Yield: >10%

13) Hardness: <230HB

14) K type mechanical joint with flange and bolts available

15) Process and testing: a) Blast furnace (Analysis of raw materials test ) b) Mg treatment (Micro & chemical composition test) c) Pipe spinning (Temperature test) d) Heat treatment (Micro structure; Flattening test) e) Zinc coating (Thickness testing) f) Dimensional checks (Thickness & Dia. testing) g) Hydraulic test (Pressure test)