Microstructures: Why Should You Care About Them?
Microstructure – A Short Definition: Steel microstructure refers to the existing described order and arrangement of observable…
Material Chemical Composition
The chemical compositions of the steels most commonly used for the manufacturing of API Spec 6A, API Spec 16A and…
Brinell Hardness Testing
When you perform a Brinell hardness test with a well maintained, calibrated testing device, you can learn:…
Carbon Steel Pipe Dimensions and Weights
Pipe Size(Nominal) Schedule Outside Diameter Inside Diameter Wall Thickness Wt. Lbs.Per Foot 1/2 5 .840 .710 .065…
API 5L Line Pipe Physical Properties
Line pipe grade designations come from API Spec 5L Specification for Line Pipe. Standard Line Pipe has…
Identification of Male and Female Union Halves on Hammer Wing Unions
“How can I make certain I know which Hammer Union Half to call male, and which to…
Clamp Bolt Tightening Sequence
BOLT TIGHTENING SEQUENCE FOR API CLAMP USING 4 BOLTS. Note: Washers must have proper installation orientation, as shown above….
Clamp Hub Ring Groove Repair
Caution: Hub ring grooves cannot have repair performed by simply skim cutting the Hub face and deepening the…
Inspection of Older Cast Steel Clamps
Prior to 1986 most manufacturers that made clamps, to fit clamp hub connections that utilized API ring gaskets as seal…
API Clamp Test Pressures and Applied Loads
API Spec 16A clamps differ from all other API equipment in regard to design and hydrotest. Clamps…