Pipes – ERW / SMLS / LSAW / SSAW.
Materials – Carbon, Stainless, Titanium, Alloy, Aluminum. 

Coil/Skelp – HR/PO/CR/GI/GA/PPGI etc.
Materials – Carbon, Stainless.

Plate/Sheet.
Materials – Carbon, Stainless, Titanium, Aluminum. 

Checked Plate/Coil.
Materials – Carbon, Stainless.

Deformed bar/Re-bar.
Materials – Carbon. 

Round bar.
Materials – Carbon, Stainless, Titanium. 

Fitting & Flange.
Materials – Carbon, Stainless. 

Scaffolding.
Materials – Pre-Galv. / Hot-dipped Galv.

Eyelet.
Materials – Aluminum & Bronze. 

[ITEMS]
☆ Alloys 
– Pipe, Plate, Sheet, Coil, etc.
☆ Aluminum – Profile, Pipe, Plate, Sheet, Coil, etc.
☆ Carbon – Pipe, Plate, Sheet, Coil, H-Beam, Angle bar, Round bar, Deformed bar, CHQ, Wire-rod, etc.
☆ Stainless – Pipe, Plate, Sheet, Coil, Round bar, etc.
☆ Titanium – Pipe, Plate, Sheet, Coil, etc.
☆ Scaffolding – Pipe, Clamp/Coupler, Joint-Pin, etc.
☆ Eyelet – 23mm, 28mm, 33mm (aluminum/brass)
☆ Secondary/Surplus – Pipe (ERW, SMLS, LSAW, SSAW), Coil (HR, PO, CR, GI, GA, GL, PPGI, PPGL, etc.), Plate, Sheet, etc.

[SPECIFICATION]
ASTM/ASME
– A106/A106M – Seamless Carbon Steel Pipe for High-Temperature Service1
– A139/A139M – Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)1
– A178/A178M – Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes1
– A179/A179M – Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes1
– A192/A192M – Seamless Carbon Steel Boiler Tubes for High-Pressure Service1
– A193/A193M – Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications1
– A203/203M – Standard Specification for Pressure Vessel Plates, Alloy Steel, Nickel 
– A209/A209M – Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes1
– A210/A210M – Seamless Medium-Carbon Steel Boiler and Superheater Tubes1
– A213/A213M – Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superhe ater, and Heat-Exchanger Tubes1
– A214/A214M – Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes1
– A249/A249M – Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes1
– A250/A250M – Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes1
– A252/A252M – Welded and Seamless Steel Pipe Piles1
– A258 – Methods of Testing Magnetic Materials
– A283/283M – Low and Intermediate Tensile Strength Carbon Steel Plate
– A312/A312M – Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes1
– A32 – Standard Specification for Cold-Finished Bessemer Steel Automotive Screw Stock
– A36/36M – Standard Specification for Carbon Structural Steel
– A366/366M – Standard Specification for Commercial Steel (CS) Sheet, Carbon (0.15 Maximum Percent) Cold-Rolled 
– A387/387M – Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
– A446/446M – Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality
– A515/515M – Standard Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature Service
– A516/516M – Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service
– A526/526M – Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Commercial Quality
– A527/527M – Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Lock-Forming Quality
– A528/528M – Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process Drawing Quality
– A53/A53M – Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless1
– A537/537M – Standard Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel
– A553/553M – Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered 7, 8, and 9 % Nickel
– A570/570M – Superstrength Alloy Steel Forgings for highly stressed structural members
– A572/572M – Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel
– A573/573M – Standard Specification for Structural Carbon Steel Plates of Improved Toughness
– A591/591M – Standard Specification for Steel Sheet, Electrolytic Zinc-Coated, for Light Coating Weight [Mass] Applications
– A611 – Standard Specification for Structural Steel (SS), Sheet, Carbon, Cold-Rolled
– A619/619M – Standard Specification for Non-Killed Forming Steel (NKFS) Sheet, Carbon Cold-Rolled
– A620/620M – Standard Specification for Drawing Steel (DS), Sheet, Carbon, Cold-Rolled 
– A633/633M – Standard Specification for Normalized High-Strength Low-Alloy Structural Steel Plates
– A642/642M – Specification for Steel Sheet, Zinc-Coated (Galvanized) by the Hot Dip Process, Drawing Quality, Special Killed 
– A653/653M – Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process
– A671/A671M – Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures1
– A672/A672M – Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures1
– A691/A691M – Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures1
– A715 – Standard Specification for Steel Sheet and Strip, High-Strength, Low-Alloy, Hot-Rolled, and Steel Sheet, Cold-Rolled, High-Strength, Low-Alloy, with Improved Formability
– A792/792M – Standard Specification for Steel Sheet, 55 % Aluminum-Zinc Alloy-Coated by the Hot-Dip Process
– B163/B163M – Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes
– B165/B165M – Nickel-Copper Alloy(UNS N04400) Seamless Pipe and Tube
– B619/B619M – Welded Nickel and Nickel-Cobalt Alloy Pipe
– B622/B622M – Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube

API
– API 5CT (Group I & II) J55, K55, N80, P110 – Casing and Tubing
– API 5L A/B, X42, X46, X52, X60, X65, X70, X80 – Line Pipe

EN/DIN
– BS 1387 -Screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads
– BS 1449 – Specification for stainless and heat-resisting steel plate, sheet and strip 
– BS 6323 – Seamless and Welded steel tubes for automobile, mechanical and general engineering purposes
– BS EN 10142 – Specification for continuously hot-dip zinc coated low carbon steel sheet and strip for cold forming
– BS EN 10147 – Continuously hot-dip zinc coated structural steels strip and sheet. Technical delivery conditions
– BS EN 10326 – Continuously hot-dip coated strip and sheet of structural steels
– DIN 10277 – Steels for general engineering purposes
– DIN 17100 – Steels for General Structural Purposes

KS/JIS
– KS C8401/JIS C8305 – Rigid steel conduits
– KS D3507 – Carbon Steel Pipes for Ordinary Piping
– KS D3520 – Prepainted hot-dip zinc-coated steel sheets and coils
– KS D3562/JIS G3454 – Carbon Steel Pipes for Water Service
– KS D3563/JIS G3461 – Carbon Steel Tubes for Boiler & Heat Exchanger
– KS D3566/JIS G3444 – Carbon steel tubes for general structural purposes
– KS D3568/JIS G3466 – Carbon steel square pipes for general structural purposes
– KS D6711 – Painted aluminium and aluminium alloy sheets and strips.
– JIS G3101 – General Structure Hot Rolled 
– JIS G3106 – Welding Structural Steel
– JIS G3113 – Structural Automobile Hot Rolled Steel 
– JIS G3116 – Hot-rolled structural steel plate 
– JIS G3125 SPAH – Superior Atmospheric Corrosion Resisting Rolled Steel
– JIS G3132 – Hot Rolled Steel Sheet 
– JIS G3312 – Prepainted Hot-dip Zinc-coated Steel Sheets and Coils
– JIS G3321 – Galvalume(55% Al-Zn) coated steel coil
– JIS G3444 – Carbon Steel Tubes for General Structureal Purposes
– JIS G4051 – Carbon steel for Machine Structural Use 
– JIS G4053 – Low-Alloyed Steels for Machine Structural Use

Useful Links; 
☆ KOSA (Korea Iron & Steel Association) – http://www.kosa.or.kr
☆ Korean Metal Journal – http://eng.kmj.co.kr
☆ E-Metal World – http://www.emetalworld.co.kr
☆ Korean Stainless Steel Club – http://www.stainlesssteel.or.kr
☆ American Iron and Steel Institute (AISI) – http://www.steel.org
☆ American Petroleum Institute (API) – http://www.api.org
☆ American Society for Testing and Materials (ASTM) – http://www.astm.org
☆ American Society of Mechanical Engineers (ASME) – https://www.asme.org
☆ National Association of Steel Pipe Distributors (NASPD) – http://www.naspd.com
☆ American Metal Market – http://www.amm.com
☆ London Metal Exchange (LME) – http://lme.com 

JW Global inc.

hsk international.

myungjin polytech.