• Model NO.：Square GI
• Size：10*10-400*400mm
• Grade：Q235, Q345
• Thickness：0.6-12mm
• Length：Stock 6m, Can Be Customer Made
• Zinc Coating：Usually 40G,M2, Can Be Customer Made
• Transport Package：in Bundle
• Specification：API-5L ASTM-A53, Bs1387-1985, GB,T3091-2001
• Trademark：TYT
• Origin：Tianjin China
• HS Code：73066100
• Production Capacity：500, 000mt,Year

 Shape:round/sqaure/rectangular/oval               or other special section tube OD:20-219.1mm, WT: 0.8-12mm        Size:10*10-400*400mm,WT:0.8-12mm Size:10*20-400*600mm, WT:0.8-12mm length:0.3-13m     (as customers' request)Surface:Pre-galvanized/Hot Dip Galvanized/Oiled/Painted/Bared , can be dealed as customers'needZinc Coating:50-150g/m2 for Pre- galvanized, more than 200g/m2 for hot dip galvanized.or as clients'needMaterial:Q195/Q215/Q235/Q345/Q195-Q235 ABCDStandard:ASTM-A53   /BS 1387-1985/   GB/T 3091-2001 for round pipe ASTM A500 /GB/T3094       for square/rectangular pipe Manufacturing TechniqueWeld/Seamless/     ERW/ SSAW/ LSAW /     Cold Drawn/ Hot Drawn Ends:Plain /Beveled/ Threaded with sockets coupling and plastic caps/ Necking down/ Expanding neck/ Punching holes 2.Product  Chemical Composition & Mechanical Properties :  GradeChemical CompositionMechanical PropertiesCMnSiSPYieldTensileElongatiStrength MpaStrenth Mpa-on %Q1950.06-0.120.25-0.50≤0.30≤0.045≤0.05≥195315-430≥33Q2150.09-0.150.25-0.55≤0.30≤0.05≤0.045≥217335-450≥27Q2350.12-0.200.30-0.67≤0.30≤0.045≤0.04≥235375-500≥26Q345≤0.201.00-1.60≤0.55≤0.04≤0.04≥345470-630≥221) ISO 9001-2000 Standard
2) Market: All of the world
3) Application: Widely
4) Ensure quality and after-sales service
5) O. D.: 15*15~400*400mm
6) W. T.: 0.8-14.0mm
7) Length: 3-12m
8) Zinc content: 220--400g/square metre

Our services:

1.Special design avaliable according to requirements.

2.All production processes are under ISO 9001-2008 strictly

3.Free sample 

4.Acceptable for any third party inspection(SGS,BV...)

5.OEM is ok.

6.Visit factory any time. 

All items of our products and related tests as follow : 

1.ERW black round pipe (ASTM A53,GB..)

2.Weld black square/rectangular pipe(ASTM A500,GB,...)

3.Hot dip galvanized round pipe (BS 1387,ASTM A53,GB ,...)

4.Hot dip galvanized square/rectangular pipe(ASTM A500,GB...)

5.Pre-galvanized square/rectangular/round pipe,cold rolled black annealed or bright finished pipe.

6.Spiral steel pipe

7.Seamless pipe (ASTM A53,A106B,)

8.Oval pipe in galvanized and black surface

9.LTZ... special sizes pipe

10.Steel prop , steel plank,steel scaffolding pipe and accessories... steel constrctution material

11.Steel angle, Flat bar,round bar,sqaure bar, 

12.H,I,U,C,T,Y,W...steel beam/channel

13.Deformed steel bar

14.Hot rolled& cold rolled steel sheet/coil in black,galvanized,color coated surface.