Take a long, hard look at the hardness specification when ordering tube or pipe

摘要

Ordering tubing is a little like going to an auto dealership and ordering a car or a truck. The many options available these days allow the buyer to customize the vehicle in all sorts of ways-interior and exterior colors, interior trim packages, exterior styling options, drivetrain choices, and sound systems that nearly rival home entertainment systems. Given all these choices, you probably wouldn't settle for a standard, no-frills vehicle.