Vinay Chandan
Proprietor
STEEL GEMSQUALITY YOU CAN TRUSTSend RFQYOUR INDUSTRIAL MATERIAL DESK
Mumbai · India & exportWelcome to Steel Gems.
INDUSTRIAL MATERIALS · INDIA & EXPORT
Source the right material.
With confidence.
Pipes, fittings, flanges, fasteners and special alloys—with technical review, traceability, testing and third-party inspection support.
START WITH YOUR TASK
What are you working on?
Find a productSearch by grade or standard
→⌾Flange dimensionsNB, OD, PCD and bolt drilling
→∑Calculate weightsPipe and metal calculators
→✓Check a specificationFind missing RFQ details
→↗Send an RFQShare files and enquiry
→CORE PRODUCT RANGE
Start with a category
ENGINEERING DESK
Useful tools, without the clutter.
Go directly to the task you need. Calculators, specification checks and technical references live on focused pages.
Open engineering toolsNEW
Piping Layout DesignerDraw a project, connect components and prepare a material list.
→NEWBuild a Pipe ConnectionExplore pipe, flange, gasket and bolt assemblies visually.
→01Flange Dimensions & DrawingsView NB, DN, flange OD, PCD and bolt drilling visually.
→02Weight CalculatorsEstimate pipe, plate, round-bar and flat-bar weights.
→03Specification CheckerFind missing commercial and technical RFQ details.
→04Material Cross-ReferenceCompare common grade designations safely.
→05Standards & GradesBrowse ASTM, ASME, API, IS and UNS references.
→TECHNICAL BLOGS & BUYING GUIDES
Answers for your next material enquiry
NEW · FITTINGS & BENDS
1D to 10D Bend Radius Explained
Compare bend radii visually, calculate CLR and prepare a clear elbow or bend enquiry.
Explore the guide →NEW · PIPE SIZE REFERENCEPipe Size Chart in mm
NB to inches, actual OD, MS and SS schedules, weight per meter and price conversion.
Read chart →PIPE SELECTIONSCH 40 vs SCH 80
Compare thickness, bore and weight before preparing a pipe enquiry.
Read guide →HIGH-TEMPERATURE ALLOYS253 MA vs SS 310
Compare alloy selection factors for demanding high-temperature applications.
Read guide →QUALITY YOU CAN VERIFY
Documentation built into the supply process.
- MTC & traceabilityMaterial certificates reviewed against the order.
- Testing coordinationPMI, IGC, UT, radiography and project testing.
- Third-party inspectionSupport for approved agencies and hold points.
- Export documentationPacking, marking and shipping support.
MEET OUR TEAM
Direct access to the people behind Steel Gems.
Discuss material selection, project documentation, inspection or delivery directly with our team.
Krunal Chandan
Co-owner
READY TO DISCUSS A REQUIREMENT?