As the industrial requirements handling higher pressure fluids, pipes were manufactured with thicker walls, which has become known as an extra strong (XS) or extra heavy (XH).

Definition and Details of Steel Pipe Schedule

Steel Pipe Schedule

    at the IPS time only three walltickness were in use. the American Standards Association
surveyed industry and created a system that designated wall thicknesses based on smaller
steps between sizes. Steel Pipe Schedule Chart PDF Download  .The designation known
as nominal pipe size replaced iron pipe size, and the term schedule (SCH) was invented to
specify the nominal wall thickness of pipe. By adding schedule numbers to the IPS standards,
today there is a range of 16 schedules, namely:
SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, and STD, XS, XXS.



The pipe schedule sets the pipe wall thi ckness. Obviously increasing the wall thickness of the pipe
increases the mechanical strength of the pipe, allowing it to handle higher design pressures.

The following pipe schedules are available (in order of increasing wall thickness): 5S, 10S, 10, 20, 30, 40S, STD, 40, XS (Extra Strong), 60, 80, 100, 120, 140, XXS (Double Extra Strong) and 160. So for pipe of 12 inch NB (DN 300 mm) with a pipe schedule 5S, has a wall thickness of 0.156 inches (4 mm) . As the schedule is increased, so does the wall th ickness. At a pipe schedule of 160, a 12 inch NB pipe has a wall thickness of 1.312 inches (33.3 mm).

It should be noted that not all pipe schedules are available for all pipe sizes.

SCH 40,schedule 40 steel pipe

SCH 40 PIPES DIMENSIONS : schedule 40 steel pipe PDF downloadd

SCH 80,schedule 80 steel pipe

SCH 80 PIPES DIMENSIONS : schedule 80 steel pipes PDF download


schedule 40 steel pipe,SCH 80 steel pipe
B.Outer diameter:1/2"-48"
C.Wall thickness:SCH10-XXS

Standard: API 5L, API 5CT, ASTM A106, ASTM A53, GB/T8162, GB/T8163, GB/T5310, GB/T3087
Grade: GR.A, GR.B, X42-70, Q345B, ST37, ST37.2, 10#, 20#, J55, K55, N80, L80, T95, C95, P110, Q125
OD: 10.3-406.4mm
WT: SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140
Usage:boiler use, water transport, building, machinery, traffic, aviation, oil development etc.

Appilcation:seamless pipe for low and medium pressure boiler,high prssure boiler,ship-building ,petroleum cracking,chemical fertilizer equipment.

we can provide Seamless Steel Pipe, API Pipe, SSAW Pipe, LSAW
Pipe, Anti-Corrosion Steel Pipe, Scaffolding Tube and Hollow Structure Sections etc. |
And all of our products are made to confirm to the ASTM, ANSI, API, EN, BS, JIS and GB Standard.






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New Update Pipe List

    Carbon Steel Bend Elbow,Size:1/2 to 48-inch/DN15-DN1200 Angles:30, 45, 60, 90, and 180°WT:Sch5-Sch160 ,such as SCH20, SCH40, STD, SCH80, SC100, SCH120, and SCH160.

    Line Pipes for Sour Service,Size:1/8"-40"*0.039"-4.72" Steel Grades:A,B,X42,X46,X52,X60, X65,X70 Operative Standard:API Spec 5L,NACE MR0175,NACE TM0177.

    ERW tube,Spiral welded pipe, galvanized pipe, seamless pipe,To spec API 5L, API 5CT, ASTM A53, ASTM A252, EN10217, EN10219, BS1387 etc.

    Jcoe Pipe - API 5L LSAW PIPE,3) Materials:Q235B,Q345B,ASTM A53GrB, X42-X70,API5L GrB,etc..

    EFW A134 weld pipe big OD Standard: ASTM,JIS,API 5L,DIN Material:A,B,X42,X46,etc. W.T.:6-19mm,O.D.:406-2750mm.
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