Hebei Huayang Steel Pipe Co., Ltd. |
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Black Painting SRL 25 Feet ASME SA106 3PP Welded Steel Pipe
Welded Pipes Finishing
The finishing of welded pipes depends on customer requirements and
applications. These include threaded and coupled ends for use in
long fluid transportation lines, threaded end without coupling for
diverse diameter lines, Plain End or Cut Square for the general
purposes. Pipes with pre-grooved or bevelled end are supplied for
structural applications.
A different metallic coating like galvanising, lead lining,
aluminising and claddings are also used for corrosion protection
during applications. Non-metallic coatings such as oiling, paints,
plastic coating, coal tar etc are also used for protection during
storage and transportation. End finishing and coatings add
significant costs to the welded pipes.
Designations and Specifications
ASTM A53 and API-5L are commonly used to define general
specifications of welded pipes. ASTM B36.10 standard is used to
define sizes and dimensions of pipes and tubes. While some of the
industries have their own norms and custom sizes.
In North America, designations used to define pipes sizes are known
as Nominal Pipe Size (NPS) and Schedule Number (Sch.). NPS defines
the internal diameter of pipes and Sch. refers to the range of wall
thickness.
In European standards, Nominal Bore (NB) is used to represent the
internal diameter in mm and OD represents the outer diameters of
pipes and tubes. ASTM/ANSI standard weights are usually expressed
in Kg/m or lb/ft.
The following length standards are used in the market and are vital
for the pipeline project designs.
1. Single random length (SRL) ranges between 18 – 25 feet plain end
or 18 – 22 feet threaded and coupled pipes.
2. Double random length (DRL) ranges between 38-40 feet.
3. Longer than double random is more than 38 – 40 feet in length.
4. Cut Lengths are produced in fixed lengths within +/- 1/8 inch,
while some are produced up to 80 feet long.
Item | Details |
Type | Seamless,ERW,LSAW,SSAW |
Standard | ASTM A106.ASME SA106,API 5L ,ASTM A53 ,ASME SA53 |
Grade | B,X42,X46,X52,X56,X60,X65 |
OD | 17.1-1422mm (3/8inch-56inch) |
WT | 1.5-100mm (Ssch20,sch30,STD,Sch40,Sch80,XS,XXS,Sch100,sch120,etc) |
Length | 1-12.9m random length,or Fixed length( 5.8m,5.85m,6m.11.8m.12m) |
Min.Order quantity | We can accept 1 pcs/size if we have stock. |
Surface | 3PE,3PP,FBE,Black painting,Clear oil varnish.or self color,Inorganic zinc rich layer |
Ends | Plain ends,Bevels. |
Payment term | TT or LC |
Package | Bundles or loose |
Delivery time | Depends on the specific orders,normally 45days |
Factory | Hebei China |