LEADING TOOL STEEL & ALLOY STEEL SUPPLIER

SUPPLY TOP QUALITY TOOL STEEL WORLDWIDE

Why Us

Over 20 Years Experience

Otai has over 20 years of professional experience for 4140 / 42CrMo4 plate, 4140 round, 1.2738 steel plate, and 34CrNiMo6 round bar etc. We know customers’ concerns and avoid problems with delivery.

ISO 9001 Certified & SGS

We are ISO9001:2015 certified and our supplied products also pass SGS inspection. Quality is key to winning long-term cooperation with customers.

10000+ Tons 4140 Plate

As the No. 1 Stockist of AISI 4140 / 42CrMo4 steel plate, we keep daily stock of over 10000 tons from 4mm to 300mm thickness. Machined and finished ground pieces are also available.

Professional Staff

Our skilled and professional staff will solve your problems and worries pre-sales or after-sales. You are comfortable during our cooperation.

Featured Customers

UDDEHOLM- buys from otai continuously
fastenal-buys from Otai for fasten products
thyssenkrupp is also our key important customer on plastic mold steel material
schlumberger-buys 8620 steel round bar from Otai with required technical specification
BOHLER is OTAI's VIP customer in alloy steel and tool steel

Latest News & Blog

1.2083 tool steel equivalent with X42Cr13 or AISI 420

1.2083 tool steel equivalent with X42Cr13 or AISI 420

When it comes to high-performance 1.2083 tool steel for demanding applications, 1.2083 tool steel stands out as a preferred choice. Known for its excellent corrosion resistance, high wear resistance, and […]

Read more
How Does 1.2083 Compare to Stainless Steel

How Does 1.2083 Compare to Stainless Steel

How Does 1.2083 Compare to Stainless Steel? Choosing the right steel material can be challenging, especially when selecting between 1.2083 tool steel and stainless steel. Both have unique properties that […]

Read more
Trusted 1.2311 Supplier Since 1997

Trusted 1.2311 Supplier Since 1997

Trusted 1.2311 Supplier Since 1997 For over two decades, we have been a trusted supplier of 1.2311 tool steel, serving industries worldwide with high-quality materials. Whether you are in the […]

Read more