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ASTM A500 Cold-Formed Rounds and Shapes Welded and Seamless Carbon Steel Structural Tubes This specification covers cold- formed welded and seam-less carbon steel round, square, rectangular, or special shapestructural tubing for welded, riveted, or bolted construction ofbridges and buildings, and for general structural purposes. This tubing is produced in both welded and seamlesssizes with aperiphery of 88 in. [2235 mm] or less, and aspecified wall thickness of 0.875 in. [22

TORICH GB/T699 Quality Carbon Structural Steel for Structure Tube and Pipe Product Description: Standard: GB/T699 Size Range: OD: 4-420mm WT: 0.5-50mm Length: 1-12m Steel Grade: 08F, 10F, 15F, 10#, 20#, 45#, 15Mn, 20Mn, 25Mn etc Features: Smooth inner and outer surfaces Available in a variety of outer diameter sizes Good raw material quality Narrow tolerance Deliver condition: 1). Hot Rolled 2). Annealed 3). Normalizing 4). High temperature tempering Steel Grade and Chemical

Astm A106 A53 Api 5l Structural Steel Pipe / Carbon Steel Tube/Structural Steel Pipe ASTM A106 A53 API 5L Structural Steel Pipe , Carbon Steel Seamless Tube,TORICH ASTM A106 A53 API 5L Seamless carbon steel tubes for high temperature service Applications: for high temperature service Size range: O.D.:6-168mm W.T.:1-15mm L:max12000mm Steel Grade and Chemical Compositions: Steel Grade C Mn P S Si Cr Cu Mo Ni V max max max min max max max max max A 0.25 0.27~0.93 0.035 0.035 0

TORICH ASTM A500 Welded and Seamless Carbon Steel Structural Square Tubes TORICH ASTM A500 Welded and Seamless Carbon Steel Structural Square Tubes SectionStandard: ASTM A500 Seamless Steel Rectangle Tubing Cold-Formed Welded Carbon Structural Tubing in Rounds and Shapes Rectagnle and Square Applications: for construction of bridges, and buildings, and for general strcutrual purposes, For Algricultrual Michinery, Engineering etc. Size range: Square tubes O.D. :20-20 to 500

TORICH A311 Cold Drawn Stress Relieved Carbon Steel Bars TORICH A311 Cold Drawn Stress Relieved Carbon Steel Bars Standard: ASTM A311, A29/A29M, A108, A370, E527 Material: 10#.20# Surface Finish: Cold finish(Cold drawn, stress relieved, turned, polished, ground) Oiled or other rust inhibitor Length: According to customers' requirement Usage: This standard covers Cold Drawn Stress Relieved Carbon Steel Bars for Structural Steel Bar Characteristic: Good concentricity, Good

GB/T 18704 TORICH stainless steel clad pipes for structural purposes Size Range: OD:12.7-325mm WT:0.8-12mm Length: 1000mm-8000mm Characteristic: Good OD and ID tolerance controlled to Technical Standard Stable quality Tolerance of OD Surface delivery condition Nominal outside diameter Tolerance Polishing,Polish (SB,SP) ≤25 ±0.25 ＞25~40 ±0.30 ＞40~50 ±0.35 ＞50~60 ±0.40 ＞60~70 ±0.50 ＞70~80 ±0.60 ＞80 ±1％D Unpolished,Sand blasting(SNB,SS) ≤25 ±0.30 ＞25~50 ±0.40 ＞50 ±1.0％D

GB/T12770 022Cr19Ni10 Double Arc Welding Mechanical Structures Stainless Steel Tubes Size: OD:20-500mm WT:2-50mm Length:2-12m Application: Electric heater fields like metal tube heater,hot runner,thermostat,heating apparatus,air conditioning,refrigerators and other household appliances,heating etc.Food and beverage,petroleum chemical industry,heat exchanger,condenser,marine environment,paper making,chemical fertilizer,instrumentation,medical,Automotive engineering,aerospace

Rectangular Hollow Sections GOST 30245Steel bent closed welded square and rectangular section for building Application:for steel Building Structures. Manufacture method:Shaping the round tubular section with longitudinal weld(Automatic high frequency welding) and consequent spellerizing to square or rectangular section. The article sections shall conform to those specified in fingures 1 and 2 Remark: h—Height(width)；b—width；t—wall thickness；R—edge radius；I—Inertia moment；W

GB/T8162 Q235 Carbon Seamless Steel Pipe GB/T8162 Q235 Carbon Seamless Steel Pipe Steel Grade/Steel Material: Q345 Q195 10# 20# Steel pipe standard:GB/8162 Characteristic: Good concentricity Good OD and ID tolerance High Precision Stable quality Smooth Roughness TORICH QUALITY ASSURANCE Production Processs: RAW MATERIAL ↓ INCOMING INSPECTION ↓ STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION → CLEANING → PHOSPHORI CLEAN ↓ ENDS CUTTING←STRAIGHTENING←HEAT TREATMENT↔MIDDLLE