|
OD
|
W/T
|
|
inch
|
mm
|
inch
|
|
8-5/8
|
219.1
|
0.203-0.344
|
|
10-3/4
|
273.1
|
0.203-0.500
|
|
12-3/4
|
323.9
|
0.219-0.500
|
|
14
|
355.6
|
0.219-0.562
|
|
16
|
406.4
|
0.219-0.562
|
|
18
|
457
|
0.219-0.562
|
|
20
|
508
|
0.219-0.562
|
|
22
|
559
|
0.219-0.625
|
|
24
|
610
|
0.219-0.625
|
|
26
|
660
|
0.219-0.625
|
|
28
|
711
|
0.219-0.625
|
|
30
|
762
|
0.219-0.625
|
|
32
|
813
|
0.250-0.751
|
|
34
|
864
|
0.250-0.751
|
|
36
|
914
|
0.250-0.751
|
|
38
|
965
|
0.250-0.751
|
|
40
|
1016
|
0.250-0.751
|
|
42
|
1067
|
0.250-0.751
|
|
44
|
1118
|
0.250-0.751
|
|
46
|
1168
|
0.250-0.751
|
|
48
|
1219
|
0.250-0.751
|
|
52
|
1321
|
0.250-0.751
|
|
56
|
1422
|
0.250-0.751
|
|
60
|
1524
|
0.250-0.751
|
|
64
|
1626
|
0.365-0.851
|
|
|
|
|
| Specifications︰ | DNV-OS-F101 |
| Standard Met︰ | Concrete Weight Coatings (Gas, Oil, Water)
Concrete weight coating is applied to the exterior of steel pipe to provide negative buoyancy or mechanical protection for submarine pipelines. Ideal for pipe ranging from 4 to 48 inched OD or greater. It can be applied over most pipe coatings. The concrete formulation can be tailored to any specified density specification. Typical product formulations are 140, 165 and 190 pounds-per-cubic-foot (nominal), but, greater densities are also available. Thicknesses can be applied from one to eight inches. Concrete compressive strengths range from 3000 psi and greater; reinforcing galvanized wire is available in several mesh and gauge values, with single or multiple feeds. Embedded depth controlled for additional strength and stability.
Application: Accurately proportioned quantities of cement, iron ore, sand and/or granite aggregate are mixed together to yield the specified density. Controlled wire placement during concrete buildup achieves the specified wire depth within the coating. Weighing verifies that each joint meets project-specific gravity requirements. Concrete ends are cleaned and excess wire is trimmed. After curing, joints are stockpiled and ready for loadout.
|
|
|
|
