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Model No. : | JIS G3466 |
---|---|
Brand Name : | Torich |
Type : | Seamless |
Ningbo, Zhejiang, China
Product beschrijving
Relevante norm: KS D 3568 ASTM A500 BS EN 10025
Vierkante en rechthoekige vierkante buizen van koolstofstaal voor structurele doeleinden
Productiemethode: ERW ARC-lassen Naadloos
CHEMICAL COMPOSITION % max |
|||||
Steel grade |
C |
Si |
Mn |
P |
S |
STKR 400 |
0.25 |
- |
- |
0.04 |
0.04 |
STKR 490 |
0.18 |
0.55 |
1.5 |
0.04 |
0.04 |
MECHANICAL PROPERTIES min |
||||
Steel grade |
Tensile strength Mpa |
Yeild point or proof stress Mpa |
Elongation % |
|
STKR 400 |
400 |
245 |
23 |
|
STKR 490 |
490 |
325 |
23 |
Dimensional tolerance |
||
Specified item and dimension |
Dimensional tolerance |
|
length of side |
100mm or under |
±1.5mm |
over 100mm |
±1.5% |
|
Unvenness of flat plate portions |
side length 100mm or under |
0.5mm max |
side length over 100mm |
within 0.5% of side length |
|
Angularity made by adjacent flat plate portions
|
±1.5° |
|
Dimension at corner:s |
3t max |
|
Length |
+ not specified 0 |
|
Un-straightness |
Within 0.3% |
|
Wall thickness :t |
Square steel tube manufacture by welding |
under 3 mm ±0.3mm |
Seamless square steel tube |
under 4mm ±0.6mm |
Meer: Torich JIS G3444 3466 Standaard STK400 STKR 400 STKR490 Vierkante stalen buis 20x20x2 gebruikt als tafelpoot Vierkant en rechthoek Gewicht:
W = 0,0157 t (EEN + B-3,287 t)
Coating: Thermisch verzinkte coating
Elektrolytische zinklaag
Thermisch aluminium gecoat
Thermisch verzinkt-5% aluminiumlegering gecoat
Hot dip 55% aluminiumlegering gecoat
Einde: eenvoudig of charmant
Ningbo, Zhejiang, China
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