STKR400/ STKR490 square hollow section

Short Description:

JISG3466 STKR400 and STKR490 square & rectangular hollow section

Product Detail

Product Tags

Ⅰ.Simple Description:


Grade: STKR400, STKR490

Application: Steel structure frame project

Size: 20*20-600-600mm Thickness 1.5mm-30mm

Certificate: FPC, CE, Mill certificate, EN10214-1

Ⅱ.Chemical Composition:

Grade Compsition Chemical (Max %)
C Si Mn P S
STKR400 0.25 - - 0.04 0.04
STKR490 0.18 0.55 1.5 0.04 0.04

Ⅲ. Mechanical Properties:

Grade Yeild Strength    min Mpa Tensile Strength
min Mpa
STKR400 245 400 23
STKR490 325 490 23

Ⅳ. Production Show:


Ⅴ. Package:


Ⅵ. Loading:


Ⅶ. Further Processing:


Ⅷ. Application:

Alloy square tubes are used in construction, machinery manufacturing, steel construction projects, shipbuilding, solar power

brackets, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls,

automobile chassis, airports, etc.

Ⅸ. Quality Control:


Ⅹ. Our Service:



Q1: Are you manufacture or Trader

A: We are both manufacture and trader

Q2: Can you offer sample?

A: Sample small one can be offered by free, but buyer should pay the express fee

Q3: Can you offer processing service?

A: We can offer cutting, drilling, painting, coat powder etc…

Q4: What is your advantage on steel?

A: We can customize steel structure accoridng to buy’s drawings or request.

Q5: How about your logistic service?

A: we have professional logistic team who has rich experience on shipping, can offer the steady and quality ship line.


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