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17-4ph Stainless Steel Welcome to longhai Special Steel Co Ltd. A family run business with over 30 years experience in delivering specialist steel specifications.Special Steel As an ISO 9001 accredited special steel supplier we can help and advise on those hard to find special steel Specifications including British Standard BS970 specifications and BS EN ISO 4957 grades.

With a wide stock range, you'll find Tool Steel specifications, suitable for cold work, hot work, and plastic mould applications. Also ground tool steel products including Silver steel and Ground Flat Stock. tool steel can be supplied to European Standards such as DIN Specifications. We also supply to AISI steel grades and AISI equivalent grades. In addition we are stockists and suppliers of stainless steel with precipitation hardening 17/4PH, 17-4ph stainless steel, ASTM A387 F5, 30CrNiMo8,FV520B, Duplex UNS S31803 and Super Duplex UNS S32760 grades. Austenitic, martensitic and ferritic specifications stocked in a large range of shapes and sizes. We are also steel suppliers of austenitic 11 to 14% High Manganese Steel, which is a work hardening steel grade.

Our to produce better steel-based products are the main used in industrial manufacturing various types of  steel plate,round bar, round rod,pipe,tube,coil,stainless steel tube,Forging,mould,round ingot,cold-rolled steel,hot-rolled coil,strap steel,hot-rolled steel,sheet,medium plate,heavy plate,shapped bar,hexahedral bar,octagon bar,cold-rolled coil,casting mould,Rolling,Stainless Steel plate,slab ingot, slab,flat bar,square bar,square steel,pipe case,stainless steel disc.


Our leading products of steel are special steeltool steelmould steel alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel  and so on, which  have formed 12 series and more than 350 varieties with nearly 5000 specifications.


Standard: GB, ISO, DIN/GL, NF/BV, BS, JIS/JASO/NDS, ASTM/ SAE/ UNS/ AISI...  
 

We can produce stainless steel products and processing

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