#1 Piping Knowledge Base

Over 3 millions visitors per year

Weldolet size MSS SP97
Branch Fittings MSS-SP 97

Weldolet Dimensions Charts (MSS-SP 97)

Weldolet dimensions and weights (“center of the run to Weldolet face”,  “size-on-size” and “reducing” Weldolets sizes by NPS and schedule, and “run sizes combinations”). WELDOLET

Read Article »
Hydrostatic test
Miscellaneous Technical

What is a Hydrostatic Test?

The hydrostatic test consists of filling a piece of equipment with a fluid at test pressure, for a given period of time, to check the

Read Article »
Ferrule fittings
Miscellaneous Technical

Double Ferrule Compression Fittings

Compression fittings are used to create leak-free tube connections easily and quickly. Double ferrule compression fittings feature an outer nut, two deformable ferrules in soft alloy or

Read Article »
Stub end fittings ASA MSS
Buttweld Fittings ASME B16.9

Stub Ends for Flanged Joints

What is a stub end and why should it be used? Stub ends are buttweld fittings that can be used (in combination with a lap

Read Article »
ASTM vs En pipe specifications
Pipe Specifications

ASTM vs. EN Pipe Specifications

An overview of the most common ASTM and EN/DIN pipe specifications, material grades within each specification, and, when possible, the equivalent grades between ASTM vs.

Read Article »
Coated pipe
Pipe Specifications

Pipe Coating, Lining and Cladding

What is the difference between external pipe coating and internal pipe-lining and cladding? External pipe coatings are used to protect the metal from corrosive environments

Read Article »
BWG and SWG tube size
Process Instrumentation

BWG and SWG Tube Size Chart

BWG and SWG are alternative measurements for steel tubing sizes (outside diameter and wall thickness). BWG stands for “Birmingham Wire Gauge” (or “Stubs Iron Wire

Read Article »

What is Projectmaterials?

A Knowledge Base

We have tried to collect key knowledge about piping products. Over 3 million people per year consult our site now, including Staff at major EPC Contractors, End-users, Traders, Mills, and Stockists

Have Content to Share?

If you have content that fits our knowledge base, we will be happy to publish it under your name. What better way to showcase your knowledge?
Submit an Article

A Marketplace

On Projectmaterials, buyers post RFQs for products, equipment and services and get offers from suppliers around the world. We help middle-size businesses meet and deal directly

Need an Offer?

Post your RFQ for products, equipment or services on projectmaterials, get offers from the interested suppliers and close the deal directly
Post RFQ

Some of our Top Visitors...