Welded square pipe mechanical pipe Seamless square pipe
The allowable deviation of the wall thickness of square pipe shall not exceed plus or minus 10% of the nominal wall thickness when the wall thickness is not greater than 10mm, and plus or minus 8% of the wall thickness when the wall thickness is greater than 10mm, except for the wall thickness of corner and weld area. The normal delivery length of square rectangular pipe is 4000mm-12000mm, mostly 6000mm and 12000mm. The rectangular tube is allowed to deliver short and non fixed length products not less than 2000mm, or in the form of interface tube, but the Demander shall cut off the interface tube when using it. The weight of short length and non fixed length products shall not exceed 5% of the total delivery volume, and for square moment tubes with theoretical weight greater than 20kg / m, it shall not exceed 10% of the total delivery volume. The bending degree of square rectangular pipe shall not be greater than 2mm per meter, and the total bending degree shall not be greater than 0.2% of the total length.
|Standerd||GB ASTM ASME JIS DIN|
|Steel pipe grade||20 45 Q345 40cr 42crmo A53 SA53 ST35（E235）ST37.4 ST45（E255） ST52（E355）1045 S45C gr.50 5120 5140|
|Outer Diameter||10*10-500*500 mm|
|Processing Service||Cutting/Bending/Punching or according to the customer's demand|
|Surface||Galvanized Coated,black painted|
|Technology||Seamless or with seam|
|Packaging Details||Bare packing/wooden case /waterproof cloth|
|Terms of Payment||T/T L/C at sight|
|20 feet container contains dimension||Length under 6000mm/25T|
|40 feet container contains dimension||Length under 12000mm/27T
|Samples||Free samples are provided but the freight is paid by the buyer|
|Min order||5 Ton|
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