Product Overview
Our ASME B16.48 Line Blanks are purpose-built for pipeline isolation and closure.
They're put in place during maintenance, pressure tests, or system upgrades, simply to block off specific sections of a pipe.The lineup includes Figure‑8, paddle, and spacer styles. Each choice fits a different on-site need, whether that's isolating a line, switching flow paths, or creating a secure seal.Line Blanks show up across a wide range of industries:oil and gas, chemical processing, natural gas storage, power generation, shipbuilding, marine engineering, municipal water and heat supply, sewage treatment, fire protection systems, and general machinery manufacturing.
In real-world use, they hold up steadily under pressure, temperature changes, and corrosive environments. No matter the job, they support reliable pipeline operation.
Product Parameters
|
Parameter |
Specification |
|
Execution Standard |
ASME B16.48 |
|
Product Types |
Figure-8 blank, Paddle blank, Paddle Spacer |
|
Size Rang |
e 1/2" - 24" |
|
Pressure Rating |
CL150, CL300, CL600, CL900, CL1500, CL2500 |
|
Connection Type |
Butt Welding (BW) |
|
Surface Treatment |
Rust preventive oil, Hot-dip galvanizing |
|
Carbon Steel Materials |
A516 GR65, A516 GR70, A105N, A350 LF2, A694 F42, A694 F52, A694 F60, A694 F65 |
|
Stainless Steel Materials |
304, 304L, 316, 316L, 321, 12Х18Н10Т, 08X18H10, 08X17H13M2T |
|
Alloy Steel Materials |
A182 F11, A182 F22, A182 F12, A182 F5, A182 F9, A182 F91, WB36, 15XM, 10Cr9Mo1VNbN |
|
Packaging Method |
Wooden crate, Wooden pallet |
|
Supply Capacity |
2000 tons/month |
ASME B16.48 BLANKS
Dimensions of Class 150 Blanks for Use With Raised Face Flanges
|
NPS |
Inside Diameter B(mm) |
Outside Diameter O(mm) |
Centerline Dimension A(mm) |
Thickness t(mm) |
Web Width W(mm) |
|
1/2" |
16 |
45 |
60 |
3 |
38 |
|
3/4" |
21 |
54 |
70 |
3 |
38 |
|
1" |
27 |
64 |
80 |
3 |
38 |
|
1-1/4" |
42 |
73 |
90 |
6.4 |
38 |
|
1-1/2" |
48 |
83 |
100 |
6.4 |
38 |
|
2" |
61 |
102 |
120 |
6.4 |
51 |
|
2-1/2" |
73 |
121 |
140 |
6.4 |
51 |
|
3" |
89 |
133 |
150 |
6.4 |
64 |
|
3-1/2" |
102 |
159 |
175 |
9.7 |
64 |
|
4" |
114 |
171 |
190 |
9.7 |
64 |
|
5" |
141 |
194 |
215 |
9.7 |
76 |
|
6" |
168 |
219 |
240 |
12.7 |
76 |
|
8" |
219 |
276 |
300 |
12.7 |
76 |
|
10" |
273 |
337 |
360 |
15.7 |
102 |
|
12" |
324 |
406 |
430 |
19.1 |
102 |
|
14" |
356 |
448 |
475 |
19.1 |
108 |
|
16" |
406 |
511 |
540 |
22.4 |
108 |
|
18" |
457 |
546 |
580 |
25.4 |
114 |
|
20" |
508 |
603 |
635 |
28.4 |
121 |
|
24" |
610 |
714 |
750 |
31.8 |
140 |
Product Advantages
Consistent Quality, Tight Standards
Following ASME B16.48 ensures our blanks have uniform dimensions and solid mechanical strength.They handle high pressure and high temperature without issue.
Material Options for Different Fluids
From carbon steel to stainless steel and alloy steels, our materials are selected to match specific media: oil, gas, water, steam, and more.Line Blanks bring solid corrosion resistance and temperature tolerance to the table.
Configurable for Different Tasks
Pick between Figure‑8, paddle blank, or paddle spacer depending on how you need to isolate or modify your pipeline.The right choice makes on-site work cleaner and easier.
Main Applications
Oil & Gas
Line Blanks Used for isolating high-pressure pipelines, valve stations, and compressor units.Line Blanks stand out during regular shutdowns and pressure tests.
Chemical & Power
Suited for reactors and boilers where heat and corrosion are constant.Line Blanks maintain reliable performance over long durations.
Marine & Shipbuilding
Found in ballast water, fuel oil, and fire systems.
Strong resistance to seawater corrosion makes them a steady choice for long voyages.
Municipal & General Infrastructure
Common in city water, sewage, heating, gas, and sewage systems.Also used in pumps, compressors, and storage tanks for smooth daily operations.
FAQ
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