A pipe and a tube are both hollow round sections, but they are dimensioned and ordered against two different systems. A pipe is specified by a nominal size and a schedule; a tube is specified by its actual outside diameter and a wall. Report them the other way round and the quotation comes back for … Read more
How to write the certificate requirement on the order, what an MTC must show, the mismatches that hold up shipments, and when a mill certificate is not enough.
Where third party inspection sits in a steel pipe order, which tests are witnessed, what EN 10204 3.1 and 3.2 mean, and the six things that waste an inspection.
What changes between X65, X70 and X80 line pipe, when the design forces a step up, what the step costs in welding and inspection, and what to fix on the enquiry.
Grade C is the same A106 specification with a higher minimum strength and a higher carbon ceiling. What that changes in welding, availability and paperwork, and what to fix on the enquiry.
What a hydrostatic test proves and what it does not, how the test pressure and hold time are set, which report fields a buyer checks, and when a non destructive test may replace it.
What MR0175 actually controls, how sour service is decided, which grades qualify, and which clauses and documents belong on the purchase order.
A106 is seamless only; A53 covers seamless and welded pipe in three types. What changes in specification, acceptance and cost, and how to write it on the order.
T/T versus L/C for steel pipe imports: buyer risk, bank cost, L/C clauses, common discrepancies and payment tied to inspection and shipment.
How to break steel pipe delivery time into production, inspection, coating, freight and customs, and how to agree a delivery date without ambiguity.