Fasteners, Header Plugs &
Sealing Products
for Critical Service
Jade Special Metals manufactures ASTM fasteners, header plugs, tapered tube plugs and RTJ gaskets in Inconel, Hastelloy, Monel, Duplex and Super Duplex. ISO 9001:2015 certified, EN 10204 3.1 documentation on every shipment, exporting to the Gulf, Southeast Asia and Europe since 1985.
EXPORTER
Our Product Range
8 categories
ASTM Fasteners — Bolts, Nuts & Stud Bolts
We manufacture high-tensile bolts, nuts and stud bolts to ASTM, ASME, DIN and ISO specification. Core grades include A193 B7 and B16 for high-temperature bolting, A320 L7 for cryogenic service, and A194 2H heavy hex nuts. Available in stainless steel, alloy steel and carbon steel.
Bolts
12 TypesB7 studs are normally supplied with A194 2H nuts; B8M studs with A194 8M nuts. See the bolt weight chart and nut weight chart for shipment calculations.
Header Plugs & Tube Plugs for Heat Exchangers
Header plugs seal the access openings on heat exchanger headers, fin-fan coolers and air-cooled exchangers, allowing tube inspection and cleaning without cutting the header box. Tapered tube plugs isolate failed tubes in shell-and-tube exchangers, condensers and boilers without taking the unit out of service. Both are supplied with matched plug gaskets in soft iron, stainless steel and nickel.
Plug Gaskets
Applications include heat exchanger tube plugging, fin-fan and air-cooler header access, boiler and condenser tube isolation. Read the role of header plugs in heat exchangers or gaskets vs tube plugs.
RTJ Gaskets — R, RX and BX Ring Types
Ring type joint gaskets provide metal-to-metal sealing on API 6A and ASME B16.20 flanges in high-pressure oil, gas and petrochemical service. We supply R (oval and octagonal), RX and BX profiles machined to specification, plus spiral wound and flange insulation kits.
Built on Trust & Precision
Established in 1985, Jade Alloys is a Mumbai-based manufacturer, stockist, and exporter of specialty metals and industrial fasteners for critical-service applications. We supply Round Bars, Sheets, Plates, Pipes, Tubes, Bolts, Nuts, Header Plugs, RTJ Gaskets, and Tube Plugs in high-performance alloys including Inconel, Hastelloy, Monel, Titanium, Alloy Steel, Duplex, and Super Duplex Steel alongside standard Stainless Steel and Carbon Steel grades.
All products conform to ASTM, ASME, DIN, ISO, BS, and JIS standards with full material traceability. Every shipment ships with Mill Test Certificates (EN 10204 3.1), with third-party inspection available through SGS - TUV - BV. We export to 40+ countries across the Middle East, Southeast Asia, Europe, Africa, and the Americas, serving 500+ clients including EPC contractors, refineries, and OEM manufacturers. ISO 9001:2015 certified.
In-House Manufacturing
Full control from raw material to finished product - zero middlemen, better pricing and faster turnaround.
3rd-Party Testing
SGS - TUV - BV and NABL certified labs validate every critical shipment. MTR, COA, CMTR supplied.
Export-Grade Packaging
Moisture-proof, individually labelled and sea-worthy crating for every international order.
On-Time Delivery
98.4% on-time dispatch record with a dedicated logistics team for urgent and critical orders.
Full Documentation
MTR, COA, WMPQ, CMTR and complete export documentation with every single shipment.
Global Standards
ASTM, ASME, DIN, BS, ISO, JIS - manufactured to international and client-specific specs.
Specifications & Standards Reference
Every fastener we supply is manufactured to a published specification. Use these references to confirm grade, mechanical properties and dimensional tolerance before raising an enquiry.
* Pages to create — see JA-05 Sheet 9. DIN 125 is 110/mo, DIN 933 is 70/mo, ASTM A105 is 320/mo.
Round Bars, Sheets, Plates, Pipes & Tubes
From precision round bars to heavy sheets, plates, pipes and tubes - manufactured in-house and tested to international standards including ASTM - DIN - BS - ISO - ASME.
Exporting to the Gulf, Asia & Europe
Manufactured in Mumbai, supplied worldwide. Our largest markets are the Gulf, Southeast Asia and Europe, with dedicated documentation packs for each.
Globally Certified
Full certificate copies are available on the certificates page, and our inspection and testing process is documented under quality.
Quality Management System - 2015
ActiveThird-Party Inspection & Testing
ApprovedTechnical Inspection - Germany
CertifiedBureau Veritas - Marine & Industrial
CertifiedNational Accreditation Board Labs
AccreditedPressure Equipment Directive EU
CompliantEuropean Conformity Standard
MarkedAmerican Material Testing Standards
CompliantServing Oil & Gas, Power, Petrochemical & Marine
Our steel products power operations in the world's most demanding sectors - from offshore platforms to power plants.
Oil & Gas
Subsea, topside, refinery & pipeline
Power Generation
Thermal, nuclear, solar & hydro
Petrochemical
Refineries, crackers & process plants
Marine & Offshore
Shipbuilding & offshore platforms
What Our Clients Say
International procurement managers and B2B buyers across 40+ countries trust Jade Alloys for quality, documentation and delivery.
"We have been sourcing SS 316L fasteners from Jade Alloys for 6 years for our offshore projects in the North Sea. Their documentation, quality and delivery timelines are impeccable."
"Best Indian exporter we have worked with. Full material traceability, NABL test reports and export packaging that meets our warehouse standards."
"Jade Alloys consistently delivers duplex and super duplex fasteners meeting NACE MR0175 requirements. A preferred long-term procurement partner."
Latest Articles & Guides
Technical notes on grades, standards and applications for engineers and procurement teams.
Ready to Source Your Next Order?
Share your specification, grade and quantity - our team responds with pricing, lead time and Mill Test Certificate details within 24 hours.
Let's talk
Reach out directly or drop your details in the form and we'll respond within 24 hours.
Address
Office No.7, 198, Somji Building,
Opp. Sindhi Lane, Near
Gulalwadi, Mumbai - 400004
Phone
Chirag Chhajed
+91 9987685906
