Question 1

What does S355J0 stand for? What is its core advantage?

Accepted Answer

S355 means minimum yield strength 355MPa; J0 represents the material passes impact test at 0. Its biggest advantage is high strength and low-temperature toughness, far stronger than ordinary Q235 carbon steel for heavy load and cold environment projects.

Question 2

What is the difference between S355J0, S355JR and S355J2?

Accepted Answer

JR: impact test at +20; J0: impact test at 0; J2: impact test at -20. S355J0 is the most cost-effective choice for most outdoor non-extremely cold construction projects.

Question 3

Can S355J0 channel steel be hot-dip galvanized?

Accepted Answer

Yes, it can be fully hot-dip galvanized for outdoor, coastal and humid environments to achieve long-term anti-corrosion performance.

Question 4

Is S355J0 difficult to weld on site?

Accepted Answer

It has good weldability, can be welded with matching low alloy welding rods, only simple preheating is needed for thick-thickness sections.

Question 5

Can you provide EN 10204 3.1 test certificate for S355J0?

Accepted Answer

Yes, each batch can issue the official EN 10204 Type 3.1 mill test certificate with full heat number traceability.

Question 6

What is the maximum customizable cutting length?

Accepted Answer

The maximum original rolling length is 12 meters, any length within 12 meters can be cut as required.

Question 7

Is hot rolled S355J0 channel better than cold bent channel?

Accepted Answer

Hot rolled S355J0 has compact internal structure and high mechanical performance, used for main load-bearing structures; cold bent channel is only for lightweight secondary decoration supports.

Question 8

What engineering scenarios are not recommended for S355J0?

Accepted Answer

Not suitable for long-term continuous high-temperature working environments above 450, which will cause material performance attenuation.

Question 9

What sizes are in regular stock for fast delivery?

Accepted Answer

10#, 12#, 14#, 16#, 20#, 25#, 30# mainstream channel sizes are in full stock.

Question 10

What third-party inspection reports can be supplied?

Accepted Answer

SGS, BV, ISO9001 factory certification and ultrasonic non-destructive testing reports are available upon request.

Question 11

What is your usual raw length for channel products?

Accepted Answer

Standard raw length ranges from 6 meters to 12 meters.

Question 12

Is this channel suitable for outdoor exposed structural usage?

Accepted Answer

It can be used outdoors, anti-rust surface treatment is recommended for long-term exposure.

Question 13

Can we mix this channel with other steel materials in one container?

Accepted Answer

Mixed container loading is allowed subject to container space.

Question 14

What mechanical indicators will be checked for each batch?

Accepted Answer

Mainly check dimension, yield strength, tensile strength and impact value.

Question 15

Do you support third-party inspection before shipment?

Accepted Answer

Third-party inspection can be accepted as customer requirement.

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