Schedule STD Steel Pipe

Date:2024-12-16Tags:Schedule STD, Steel Pipe, Steel Pipe Piles, SCH STD pipes

SCH STD Pipe Meaning?

In the piping industry, SCH STD Pipe refers to a standard weight pipe with moderate wall thickness, designed to handle medium pressure and temperature systems. The term "SCH" stands for schedule, which is a measurement that defines the pipe’s wall thickness in relation to its nominal size (NPS). Each schedule reflects the pipe's strength and pressure capacity, making it a crucial parameter in piping system design.

Schedules range from SCH 5 (lightweight) to SCH 160 (heavyweight), with additional categories like XS (Extra Strong), XXS (Double Extra Strong), XH (Extra Heavy), and XXH (Double Extra Heavy). The schedule impacts the pipe's inner and outer diameters, particularly in smaller sizes, while larger pipes tend to maintain consistent dimensional proportions. SCH STD (Standard Weight) is a commonly used schedule, striking a balance between performance and cost-effectiveness.

These pipes are available in both seamless and welded varieties, manufactured to meet specific standards such as ANSI/ASME B36.10M. Their sizes typically range from ⅛ inch to 48 inches or more, accommodating a wide variety of industrial applications.

Specifications of SCH STD Pipes

To understand SCH STD pipes better, let's explore their dimensional and material specifications:
Standard: ANSI/ASME B36.10M (Steel Pipe)
Nominal Pipe Size (NPS): Ranges from ⅛ inch to 48 inches
Diameter Nominal (DN): Corresponds to metric size equivalents
Outer Diameter (OD): Varies by pipe size, e.g., a 20-inch NPS pipe has an OD of 508 mm
Wall Thickness: Determined by the SCH STD schedule, e.g., a 20-inch pipe has a wall thickness of 9.53 mm
Inside Diameter (ID): Calculated by subtracting the wall thickness from the OD, e.g., a 20-inch pipe has an ID of 488.94 mm
Weight: For a 20-inch SCH STD pipe, the weight is approximately 117.15 kg/m (dry weight) and 304.81 kg/m (including water).


Example Dimensions:

Schedule STD Pipe 20″ (DN 500 mm)
Reference ANSI/ASME B36.10
Pipe Schedule STD (Standard Weight(IPS System))
NPS(inch) DN(mm) OD(mm) ID(mm) WALL THICKNESS(mm) WEIGHT(kg/m)
20″ 500 508 488.94 9.53 117.15

Heat Exchanger Seamless Tube ASTM A179
High Temperature smls Pipes API 5L Gr. B, ASTM A106 Gr. B /C, ASTM A53 Gr. B
Low Temperature smls Pipes ASTM A333 Gr. 3/6
High Yield smls Pipes API 5L Gr. X46/X42/X52/X60/X56/X65/X80 /X70PSL-1/PSL-2
Low Temperature smls Tube ASTM A334 Gr. 6
Atmospheric & Low Temp EFW Pipes ASTM A671 Gr. CC65/CC60/CC70
High Yield smls Pipes ISO 3183 Gr.L290, L245, L320, L390,L360, L450, L415,L485
High Yield SAW/ERW Pipes API 5L Gr. X46/X42/X52/X60/X56/X65/X80 /X70PSL-1/PSL-2
Moderate and High Pressure Temp EFW Pipes ASTM A672 Gr. C65/B65/B60/B70/C60/C55/ C70
High Yield SAW/ERW Pipes ISO 3183 Gr.L290, L245, L320, L390,L360, L450, L415,L485

These dimensions ensure that SCH STD pipes meet the needs of a wide variety of systems while maintaining reliability under stress.

SCH STD Pipe Dimensions

Nominal Pipes Sizes in Inch Wall thk Pipes Outer Dia in Inch Pipes Inner Dia Standards to XXHY Schedule
Pipes # 		Weight per Foots Section Modulus Gallon Capacity Per Linear Foots
2 1/2 0.120 2.875 2.635 10 3.53 .6870 .2833
0.203 2.469 STD. 40 5.80 1.0640 .2487
0.216 2.443 6.14 1.1169 .2435
0.250 2.375 7.02 1.2468 .2301
0.276 2.323 XHY 80 7.67 1.3386 .2202
0.375 2.125 160 10.02 1.6371 .1842
0.552 1.771 XXXHY 13.71 1.9971 .1280
3 0.120 3.50 3.260 4.34 1.0411 .4336
0.156 3.188 5.58 1.3122 .4147
0.172 3.156 6.12 1.4265 .4064
0.188 3.124 6.66 1.5342 .3984
0.216 3.068 STD. 40 7.58 1.7241 .3840
0.250 3.000 8.69 1.9372 .3672
0.281 2.938 9.67 2.1207 .3521
0.300 2.900 XHY 80 10.26 2.2253 .3431
0.438 2.624 160 14.34 2.8774 .2811
0.600 2.300 XXHY 18.6 3.4243 .2158
3 1/2 0.120 4.0 3.760 10 4.98 1.3776 .5768
0.226 3.548 STD. 140 9.12 2.3939 .5136
0.250 3.500 10.02 2.6001 .4998
0.281 3.438 11.17 2.8562 .4821
0.318 3.364 XHY 80 12.52 3.1400 .4617
0.636 2..728 XXHY 22.87 4.8795 .3085
4 0.120 4.5 4.260 10 5.62 1.7612 .7404
0.156 4.188 7.24 2.2354 .7156
0.188 4.124 8.67 2.6296 .6942
0.203 4.094 9.32 2.8173 .6838
0.219 4.062 10.02 3.0184 .6725
0.237 4.026 STD. 40 10.80 3.2145 .6613
0.250 4.000 11.36 3.3611 .6528
0.281 3.938 60 12.67 3.7021 .6326
0.312 3.876 13.97 4.0273 .6126
0.337 3.826 XHY 80 15.00 4.2713 .5972
0.438 3.624 120 19.02 5.1790 .5361
0.531 3.438 160 22.53 5.8997 .4822
0.674 3.152 XXHY 27.57 6.7927 .4054
1/2 0.109 0.84 0.622 STD 40 0.85 .0407 .0158
0.147 0.546 XHY 80 1.09 .0478 .0122
0.188 0.464 160 1.31 .0528 .0088
0.294 0.252 XXHY 1.72 .0577 .0026
3/4 0.113 1.05 0.824 STD 40 1.13 .0705 .0277
0.154 0.742 XHY 80 1.48 .0853 .0225
0.219 0.612 160 1.95 .1006 .0153
0.308 0.434 XXHY 2.44 .1103 .0077
1 0.133 1.315 1.049 STD 40 1.68 .1328 .0449
0.179 0.957 XHY 80 2.17 .1606 .0374
0.250 0.815 160 2.85 .1904 .0271
0.358 0.599 XXHY 3.66 .2136 .0146
1 1/4 0.140 1.66 1.380 STD 40 2.27 .2346 .0777
0.191 1.278 XHY 80 3.00 .2913 .0666
0.250 1.160 160 3.77 .3421 .0549
0.382 0.896 5.22 .4110 .0328
1 1/2 0.145 1.90 1.610 STD 40 2.72 .3262 .1058
0.200 1.500 XHY 80 3.63 .4118 .0918
0.281 1.338 160 4.86 .5079 .0730
0.400 1.100 6.41 .5977 .0494
2 0.109 2.375 2.157 10 2.64 .4205 .1898
0.154 2.067 STD 40 3.66 .5606 .1743
0.218 1.939 XHY 80 5.03 .7309 .1534
0.250 1.875 5.68 .8045 .1434
0.281 1.813 6.29 .8666 .1344
0.344 1.687 160 7.47 .9806 .1161
0.436 1.503 XXHY 9.04 1.1043 .0922
5 0.188 5.563 5.187 10.80 4.1161 1.0979
0.219 5.125 12.51 4.7279 1.0716
0.258 5.047 STD. 40 14.63 5.4500 1.0391
0.281 5.001 15.87 5.8644 1.0204
0.312 4.939 17.51 6.4074 .99647
0.344 4.875 19.19 6.9358 .9696
0.375 4.813 XHY 80 20.80 7.4300 .9449
0.500 4.563 120 27.06 9.2534 .8495
0.625 4.313 160 32.99 10.7976 .7590
0.750 4.063 XXHY 38.59 12.0954 .6734
6 0.109 6.625 6.407 5 7.59 3.5769 1.6748
0.134 6.357 10 9.30 4.3475 1.6488
0.156 6.313 10.79 5.0107 1.6260
0.188 6.249 12.94 5.9351 1.5937
0.203 6.219 13.94 6.3804 1.5780
0.219 6.187 15.00 6.8261 1.5620
0.250 6.125 17.04 7.6905 1.5306
0.280 6.065 STD. 40 18.99 8.4958 1.5008
0.312 6.001 21.06 9.3416 1.4688
0.344 5.937 23.10 10.111 1.4391
0.375 5.875 25.05 10.893 1.4082
0.432 5.761 XHY 80 28.60 12.224 1.3541
0.500 5.625 32.74 13.711 1.2909
0.562 5.501 120 36.43 14.9806 1.2346
0.625 5.375 40.09 16.1821 1.1787
0.719 5.187 160 45.39 17.8243 1.0977
0.864 4.897 XXHY 53.21 20.025 .9784
1.000 4.625 60.13 21.7719 .8727
1.125 4.375 66.14 23.1237 .7809


Applications of SCH STD Pipes

SCH STD pipes are versatile and play a critical role in numerous industries due to their balanced properties. Their moderate wall thickness makes them ideal for medium-pressure and temperature conditions.
1. Oil and Gas Pipelines
Used in transporting crude oil, natural gas, and refined products.
Reliable in gathering lines and medium-pressure distribution networks.
2. Water Supply Systems
Common in municipal water distribution for moderate-pressure systems.
Ensures durability and efficiency in industrial water transport.
3. Construction and Structural Use
Utilized as columns, beams, and supports in structural frameworks.
Ideal for scaffolding due to moderate weight and strength.
4. HVAC Systems
Ensures efficient heating, ventilation, and air conditioning pipelines.
Handles moderate thermal and pressure variations in HVAC units.
5. Industrial Manufacturing
Used in conveyor systems, machinery components, and fabrication setups.
Common in pressure equipment and boiler piping.

Key Advantages of SCH STD Pipes

Cost-Effectiveness:
The standardized wall thickness of SCH STD pipes offers a balance between strength and affordability, making them an economical choice for many projects.

Wide Availability:
With sizes ranging from ⅛ inch to 48 inches, SCH STD pipes can cater to diverse application needs.

Durability and Strength:
Made from high-quality materials like carbon steel and stainless steel, these pipes are highly resistant to wear, corrosion, and environmental stresses.

Ease of Fabrication and Installation:
The pipes can be welded, threaded, and cut easily, simplifying their integration into complex systems.

SCH STD Pipe vs. Other Schedules

Understanding how SCH STD compares to other schedules can help in selecting the right pipe:
SCH STD vs. SCH 5/10: SCH STD has a thicker wall, suitable for medium-pressure applications, whereas SCH 5 and 10 are for low-pressure environments.
SCH STD vs. SCH 80: SCH 80 pipes have significantly thicker walls, offering better performance in high-pressure systems but at a higher cost.
SCH STD vs. XS/XXS: Extra Strong (XS) and Double Extra Strong (XXS) pipes are even heavier and thicker, suitable for extreme pressure and temperature conditions.


SCH STD Pipes (Standard Wall Thickness Steel Pipes) can be used for seamless pipes, welded steel pipes, and steel pipe pile standards, depending on project needs and specification requirements. Here are their applications:

1. Seamless Pipes


SCH STD pipes are common in seamless pipes, especially in situations where high pressure, high temperature or critical structural performance is required. For example:
Oil and gas pipelines
High-pressure boiler pipes
Chemical industry transmission pipelines
Seamless pipes are manufactured by hot rolling or cold drawing processes, with uniform wall thickness and high strength, meeting the size and thickness requirements of ANSI/ASME B36.10M standards.


2. Welded Pipes

Welded pipes (ERW, LSAW, SSAW) can also meet SCH STD standards and are used in medium and low pressure systems, structural supports or large diameter pipelines. Advantages include:
Lower cost
Flexible size, easy to customize
Suitable for large diameter pipe needs (especially LSAW pipe and SSAW pipes)


3. Steel Pipe Piles

In the field of steel pipe piles, the SCH STD standard is applicable to the requirements for wall thickness in certain specific projects, but it needs to be combined with API 5L, ASTM A252 and other standards in the project. These piles are usually used for:
Foundation projects (bridges, docks)
Soil reinforcement
Marine structure support
When the outer diameter of steel pipe piles is larger, welded steel pipes (such as LSAW or SSAW) are more common, and the wall thickness can match the SCH STD specifications.

Steel Pipe Piles

Why Choose SCH STD Pipes from Baowi Steel?

Baowi Steel provides high-quality SCH STD pipes, manufactured to strict ANSI/ASME B36.10M standards. With precise dimensions, excellent strength, and fast global delivery, our pipes are the trusted choice for medium-pressure systems across industries. Contact us for reliable and cost-effective steel solutions!



Conclusion

SCH STD pipes, with their balanced wall thickness and pressure capacities, are indispensable in industries ranging from oil and gas to construction and manufacturing. Understanding their specifications and advantages can help you make informed decisions for your projects. Whether it's a seamless or welded pipe, SCH STD pipes deliver the reliability and durability needed for medium-pressure systems.
For precise dimensions, weights, and prices, consult a reputable supplier and ensure the pipes align with your project requirements.
Recruiting Agents, contact: info@baowi-steel.com

Copyright © Baowi Steel Manufacturing Co.,Ltd. All rights reserved.   Address:Gangcheng Road, Yuetang District, Xiangtan, China
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