ERW pipe

ERW pipe

OD20MM-114MM 273MM 219MM 325mm

WT 0.75MM-8MM 

standard Q195-Q235 ST33 ST42 ST37

life more than 5years

usage:furniture making ,tv stand,scaffolding,bedsteads,etc.

chemical composition-Q235:

Q235 made by grade A\B\C\D(GB700-88)

Q235A  C0.14~0.22% Mn0.30~0.65 Si≤0.30 S≤0.050 P≤0.045

Q235B  C0.12~0.20% Mn0.30~0.670 Si≤0.30 S≤0.045 P≤0.045

Q235C  C≤0.18% Mn0.35~0.80 Si≤0.30 S≤0.040 P≤0.040

Q235D  C≤0.17% Mn0.35~0.80 Si≤0.35 S≤0.040 P≤0.035

mechanical behavior-Q235:

tensile strength: σb/MPa 375-500

tensil stretch(δ5/%):

>26 (a<16mm),   >25   (a>16-40mm)

>24  (a>40-60mm),  >23   (a>60-100mm)

>22  (a>100-150mm),   >21   (a>150mm)

a=wt or diameter

About BS 1387-1985

BS 1387:1985 has been withdrawn and replaced with the EN 10255:2004 (implemented by UK national standard body as BS EN 10255:2004  "Non-alloy steel tubes suitable for welding or threading"). The table below gives the corresponding types in BS 1387 and EN 10255.

Dimensions and weight of steel tubes according the British Standard - BS 1387:1985 "Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads" can be found in the table below:

The standard is applicable to tubes of nominal size DN8 to DN150 in light, medium and heavy thickness