Spiral Steel Pipes 
SSAW Steel Pipe DSAW Steel Pipe API Spiral Steel Pipe EN10219-1/2/5 SSAW ASTM A252 Spiral Steel Pipe GB/T9711.2 Spiral Steel Pipe Oil & Gas transportation SSAW General Flow Spiral Steel Pipe Construction SSAW steel pipe ERW Steel Pipes API 5CT ERW Steel Pipe API 5L Black Steel Pipe ASTM A53 ERW Steel Pipe ASTM A252 ERW Steel Pipe EN 10219-1/2 ERW Steel Pipe EN 10217-1/2 ERW Steel Pipe GB/T3091 ERW Steel Pipe JIS ERW Steel Pipe Coating Pipes 3PE Coating Steel Pipe 2PE Coating Steel Pipe, 3PP Coating Steel Pipe FBE Coating Steel Pipe Pipe Piles Water Pipeline (AWWA/EN10224) Special Products 
Pipe Shoe
1200mm*16mm*12M (Project: Raqur II Bridge)
API 5L PSL 1 Grade Q345B
The products look like this:
The short pipe look like this:
it's wall thickness
the workers put the short pipe onto the long pipe, and welded them
This is taking photo when it on the truck.
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