A column name, not a separate line
Casing and tubing is discussed on this site as a homepage column name, not as a separate product line. The homepage column names under ERW and seamless lines include casing and tubing as a direction, and this guide discusses that direction through those lines, without turning it into a product page of its own. No size range, wall thickness, material grade, execution standard or length is stated for casing and tubing as a separate item on this site. This guide adds none of them.
A buyer who wants casing and tubing should therefore name the line wanted, ERW or seamless, together with the casing and tubing direction, in the enquiry, rather than naming only the direction. The line pages give the forming route and, where the About page gives one, the size range for each line, and the application pages describe the directions that casing and tubing work touches. Together, those pages give the buyer the line and the direction, and the enquiry gives the supplier the job detail that turns them into an answer.
Job detail for casing and tubing work
A casing and tubing enquiry should name the line, the size wanted in outside diameter terms where a size is known, the quantities, the destination and any date by which the pipes are needed. Where the job touches more than one application direction, for example a casing job that is also a pipeline job, the enquiry should name each direction, so that the reply can cover the job as a whole. Where jointing or site handling matters to the job, the enquiry should describe those points as well, in plain terms, rather than assuming they are covered by naming the line or the direction alone.
Those job details come before commercial questions, because the commercial answers depend on them. Quantity terms, timing, trade terms, payment method and documents for casing and tubing work depend on the items, the quantities and the destination, and they are settled in the enquiry rather than on this guide. This site uses only the general wording that certificates are available upon request, and any document question should name the items it concerns, so that the answer can be tied to those items.
Choosing a line for casing and tubing work
Choosing a line for casing and tubing work starts from the job, not from the direction name alone. The welded pipe guide covers ERW together with the other welded lines, and the comparison page on seamless against welded pipe sets seamless pipe against the welded group, each on the basis of forming route and application direction. Neither page states a specification table. Both pages end by returning the buyer to the enquiry, where the remaining questions belong. A buyer who reads those pages first will arrive at the enquiry with the line question already narrowed, which shortens the exchange that follows.
A buyer who already knows the line can skip the comparison pages and go directly to the enquiry, naming line, direction, size, quantities, destination and date in the first message. A buyer who does not yet know the line should read the line pages for the lines under consideration, then the comparison or welded guide page, and then the enquiry checklist page, which collects the questions in order. Either path ends at the same place: an enquiry that states the job in full and asks for the commercial points to be confirmed together for the items named.
From this guide to an enquiry
A buyer who has read this guide should next read the line page for the line wanted, then the application page for the job, and then the enquiry checklist page, which collects the questions in order. A buyer who already knows the line can skip directly to the enquiry page, naming line, direction, size, quantities, destination and date in the first message. Either path ends at the same place: an enquiry that states the job in full and asks for quantity terms, timing, trade terms, payment method and documents to be confirmed together for the items named.
No guide on this site settles an order. The catalogue narrows the choice, and the enquiry settles the order, and that division is kept on every page. A buyer who treats a guide page as an order confirmation will be disappointed, because no catalogue wording can cover quantities, timing and terms for items that have not yet been named. The enquiry pages are therefore written as the working end of the catalogue, not as an afterthought, and the guide pages point to them at every step.
Certificates available upon request. Please confirm the minimum order quantity in your inquiry before placing an order. Please confirm the lead time with the supplier before placing an order. Please confirm the trade terms and payment method before confirming an order.