The Duplex & Super Duplex Steel Inserts are used in a wide range of industrial applications. This is because of the properties and characteristics that these Duplex & Super Duplex Steel Inserts get from the elements present in their chemical composition. Therefore, because of these properties they also perform very well.

DUPLEX & SUPER DUPLEX STEEL WASHER

These Duplex & Super Duplex Steel Inserts are manufactured by taking the necessary norms, standards and guidelines in mind so that the Duplex & Super Duplex S31803 Steel Inserts that are produced are of excellent quality. Also, the necessary specifications provided by the client are taken into consideration so that they satisfy the requirements provided by the client.


Largest Inventory


Customer Support


On Time Deliveries


ISO 9001 : 2015

Specification :-

Standard DIN, UNI, ISO, JIS, GB, IS, BS, ASME, ANSI, ASTM and all International Standards
Specification DIN 931, DIN 933, DIN 912, ASTM A-193, ASTM A-194, ASTM A325, ASTM A320, ISO ( 4762, 4017, 4014) and all International Standards
Inserts Size M2 to M160, as per required
Length 3 mm to 1000 mm, as per required
Bolts Threads: METRIC, BSW, BSF, UNC, UNF or as per required
Coating Plain / Zinc plated / HDG 6az / Teflon / PTFE / Zinc aluminum flake / Geomet
Test Certificate: Manufacturer Test Certificate as per EN 10204 / 3.1

Equivalent Grades

STANDARD UNS WERKSTOFF NR.
Duplex S31803 S31803 1.4462
Duplex S32205 S32205 1.4462
Super Duplex S32750 S32750 1.4410
Super Duplex S32760 S32760 1.4410

Chemical Composition

Grade C N P Si Mn Mo Fe Cr S Ni
S31803 / S32205 1.0 max 0.03 max 0.02 max 2.0 max 3.0 – 3.5 22.0 – 23.0 0.03 max 4.5 – 6.5 0.14 – 0.2 Bal
S32750 / S32760 0.030 max 0.24 - 0.32 0.035 max 0.80 max 1.20 ma 3.0 – 5.0 - 24.0 – 26.0 0.020 max 6.00 - 8.00

Applications & Operations

We at DC Engineering make sure that our every product is made of high quality raw material. We thoroughly test each and every product before dispatching it to our customers. DC Engineering is one of the most trusted manufacturers and suppliers of fasteners and bolts which are applicable in various industries.

  • Gas Processing Industries
  • Petrochemical Industries
  • Power Generation Industries
  • Food Processing Industries
  • Chemical Industries
  • Oil & Gas Industries
  • Fertilizers Industries
  • Sugar Industries






Experimentation & Testing

DC Engineering is known for its accurate and perfect dimensions. We at DC engineering thoroughly test all our products before shipping them to the customers. We carry out destructive as well as non-destructive tests on all our products.

  • Impact Analysis
  • Eddy Current Examining
  • Power Generation Industries
  • Hydrostatic Analysis
  • Prompt Test
  • Positive Material Recognition
  • Large-Scale Test
  • Pitting Protection Test


Packaging & Dispatching

DC Engineering uses the most safest and the most effective ways of packaging for all types of deliveries. We pack our goods in various ways such as:

  • Wooden Boxes
  • Wooden Crates
  • Wooden Pallets
  • Carton Boxes
  • Shrink-Wrapped
  • Bubble Wrap Packing Material
  • Laminated & Metallized Films
  • Wooden or Plastic Crates




Cities We Export

Srinagar, Tamil Nadu, West Bengal, Vijayawada, Maharashtra, Rajkot, Karnataka, Akola, Amravati, Kanpur, Aurangabad, Andhra Pradesh, Saharanpur, Vasai, Varanasi, Faridabad, Bhadreswar, Jhansi, Nashik, Solapur, Surat, Nagpur, Raipur, Haryana, Buxar, Bhavnagar, Pune, Punjab, Banswara, Uttar Pradesh, Tadepalligudem, Manipur,Delhi, Dhanbad, Guntur, Gujarat, Ludhiana, Kalyani, Nagapattinam, Benin, Vadodara, Kerala, Patna, Ulhasnagar, Chhattisgarh, Mizoram, Chennai, Kurnool, Datia, Mangalore, Ambala, Kota, Miryalaguda, Orissa, Mumbai, Nagda, Bikaner, Ballia, Allahabad, Suryapet, Jaipur, Haora, Durgapur, Udgir, Jodhpur, Amritsar, Kalyan, Bangalore, Puducherry, Agra, Kolkata, Tirunelveli, Gujarat, India, Lucknow, Meerut, Dehradun, Bihar, Ujjain, Jharkhand, Ahmedabad, Coimbatore, Sadar, Jamnagar, Hyderabad, Chandigarh, Ranchi, Jamalpur, Ambattur, Jabalpur, Waghala, Nagaur, Gulbarga

Countries We Export

Iran, Ecuador, Mexico, Afghanistan, Bulgaria, Denmark, Kenya, Singapore, Portugal, Venezuela, Sri Lanka, Chile, Gabon, Colombia, Belgium, Peru, Belarus, Yemen, Thailand,France, Italy, Mexico, Greece, Kuwait, Romania, Iraq, Netherlands, Sweden, Switzerland, Lithuania, Lebanon, Poland, Philippines, United Kingdom, Norway, Angola, Kazakhstan, Taiwan, Nigeria, Poland, China, Nigeria, Spain, Mongolia, New Zealand, United States, Hungary, Libya, Serbia, Ukraine, Finland, South Africa, Iran, Vietnam, Israel, Czech Republic, Slovakia, Hong Kong, Azerbaijan, Qatar, Japan, Oman, Malaysia, Pakistan, Algeria, Bangladesh, Jordan, Indonesia, Russia, United Arab Emirates, Brazil, Estonia, Turkey, Austria, Croatia, Ghana, Bahrain, Korea, Canada, Bolivia, Costa Rica, Trinidad & Tobago, Tunisia, Chile, Morocco, Bhutan, Argentina, Egypt