When specifying structural steel tube and pipe for a bid, a particular job, or OEM requirements, use the following specifications. They include the three most common types of galvanized tube and pipe: Allied’s multiple part Flo-Coat& tube, pre-galvanized tube, and Routine 40 hot dip galvanized pipe.
Structural Steel Tube & Tube used for any lasting or short-term development tasks shall be produced according to one of the following methods:Allied Flo-Coat Tube: Freezing Established, Great Regularity Welded and Hot Dip Galvanized
Tube shall be produced using steel contouring to the necessities ASTM A570 Quality A with a lowest generate durability of 30,000 psi. The steel shall be cold formed and welded into tube using the Great Regularity Introduction Welding procedure able of developing a weld pill more powerful than parents or guardian metal. The tube shall be therefore approved through a melted zinc oxide shower able of implementing the required external zinc oxide part width. The technical qualities of the completed tube shall have a lowest Yield Strength of 50,000 psi and a lowest Tensile Strength of 55,000 psi.
The tube external surface place shall contain three contrasting coatings: a lead-free zinc oxide part which range from 0.60 oz/sq ft to 1.0 oz/sq ft; a transformation part of 30.0 micrograms/sq in to restrict white rust; and a clear natural plastic part as any hurdle to deterioration.
The mixed deterioration level of resistance of these three coverings shall have the capability to last 1000 time of experience sodium apply fog (ASTM B117) without exceeding beyond a highest possible of 5% red deterioration. The tube internal surface place shall be 100% protected after welding with a zinc oxide wealthy natural part with at least 91% zinc oxide powdered ingredients running. The part shall then be treated to hold up against 650 time of experience sodium apply fog (ASTM B117) without exceeding beyond a highest possible of 5% red deterioration.
Pre-Galvanized Tube: Freezing Established and Great Regularity Welded Pre-Galvanized Steel Strip
The tube shall be produced from pre-galvanized steel contouring to ASTM A446. The protected steel shall be cold formed and welded into tube using the Great Regularity Introduction Welding procedure able of developing a weld pill more powerful than parents or guardian metal. The outside part broken during welding shall be fixed by metallizing (spraying melted zinc oxide wire). The within weld place broken during welding shall be left unsecured.
STANDARD:ASTM A500,DIN2394/2395 Ect.
ZINC COATING: 80-120g/m2 or as required
PIPE SHAPE: ROUND ,SQUARE,RECTANGULAR,OVAL,FLAT OVAL ,DRUM,WATER DTIPPONG
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Ontrend Industrial Limited, member of BERMET MANAGEMENT AS in Estona, Tallinn.starts from 2007.Bermet established since 1996,We have more than 15years operating history in the field of steel business and acts today in China,Czech Republic and Estonia. Its main products are ERW Steel Pipe ,Steel Section ,Tinplate & Further-Processed steel products .