Raws li ib tug ua lag luam ntawm ncaj seam welded steel kav (ERW / LSAW), peb muab cov kev daws teeb meem thoob ntiaj teb rau kev lag luam thoob ntiaj teb. Hauv qab no yog ib qho kev sib cais ntawm cov ntaub ntawv thiab cov ntawv thov tsim nyog rau cov neeg yuav khoom thoob ntiaj teb:
Cov ntaub ntawv tseem ceeb & Cov qauv thoob ntiaj teb
① Carbon Steel Yeeb Nkab
Q235B (GB / T) / ASTM A53 Gr.B
Khoom: Nqi-zoo, weldable, zoo tagnrho rau lub teeb yuag.
Kev siv thoob ntiaj teb: Scaffolding, rooj tog ncej (Africa/SE Asia), ua liaj ua teb tsev cog khoom (Middle East).
Q345B (GB / T) / ASTM A500 Gr.C
Khoom: Lub zog siab (345MPa tawm los), huab cua -resistant.
Kev siv thoob ntiaj teb: Kev tsim kho kab teeb (EU / US), tsheb chassis (South America), warehouse racks.
API 5L X42-X70 (PSL1/PSL2)
Khoom: Anti-corrosion, kub siab ua hauj.
Siv thoob ntiaj teb: Roj & roj pipelines (Canada, Russia), offshore platforms (North Sea).
② Alloy Steel Pipes
Q420C / Q460C (EN 10025 S420 / S460)
Khoom: Tsawg-kub toughness (-40℃).
Kev siv thoob ntiaj teb: Cua turbine yees (Northern Europe), cov khoom siv mining (Australia).
③ Stainless hlau kav
304/316L (ASTM A312, EN 1.4301/1.4404)
Khoom: Hygienic, acid-resistant.
Kev siv thoob ntiaj teb: Kev ua zaub mov (FDA-raws li USA/EU), kws tshuaj tubing (Nyiv).
