Pipeline pipes are used to transport oil, gas, or water extracted from the ground to oil and gas industry enterprises
It includes two types of pipes: seamless pipes and welded pipes. The pipe end can be a flat end, a threaded end, or a socket end. The connection methods include end welding, coupling connection, and socket connection
.
Specification and execution standards of pipeline pipes:
The specification range of pipeline pipes is from 10.3-2032 × 1.7-39.7mm, and the execution standards include GB/T9711.1/API SPEC 5L
.
Material of pipeline:
The main materials include L245, L290, L360, L415, L480, GR B. X42, X46, X56, X65, X70, X80, X100 and other steel grades
.
Heat treatment process for pipeline pipes:
The production of high-grade pipeline steel pipes adopts microalloying heating treatment process. The production cost of stainless steel seamless pipes is higher than that of welded pipes, and with the increase of steel grade, the conventional process of seamless steel pipes is difficult to meet the requirements of users
.
Mechanical properties of pipeline pipes:
Tensile strength ≥ 415MPa, yield strength 245-440MNOa, yield strength ratio ≤ 0.80, elongation (%) 22, 0 ℃ impact energy Akv ≥ 40J
.
The weight calculation formula for pipeline pipes:
The formula for calculating the weight of steel pipes is:
(
external diameter
−
wall thickness
)
×
wall thickness
×
zero point zero two four six six
=
�
�
/
rice
(
Weight per meter
)
(Outer diameter wall thickness) × Wall thickness × 0.02466=kg/meter (weight per meter)
.
Principles, specifications, and spacing requirements for comprehensive pipeline layout:
The comprehensive layout of pipelines needs to follow certain principles, such as prioritizing large pipes, giving way to non pressure pipes for pressure pipes, and avoiding high-pressure pipes for low-pressure pipes
.
Comprehensive urban engineering pipeline:
The planned location of engineering pipelines under roads should be relatively fixed, and the arrangement order should be determined according to the nature and burial depth of the engineering pipelines
.
Pipeline safety protection propaganda slogan:
Emphasize the importance of pipeline safety, such as 'protecting pipeline safety means protecting life safety' and 'implementing pipeline protection laws to protect the national lifeline'
.
Basic knowledge of underground pipelines:
Install condensate tanks at the low points of gas pipelines at appropriate locations; When the gas pipeline passes through obstacles, it should be laid inside a sleeve
.
Technical Guide | Basic Knowledge of Underground Pipelines:
The thermal pipeline network is an outdoor thermal pipeline system between the heat source and the user. The thermal pipelines on urban roads are generally parallel to the centerline of the road and should be laid outside the roadway as much as possible
.
Pipeline knowledge:
Introduced the manufacturing materials, specification range, and application scenarios of high-pressure elbows, tees, and other pipeline fittings
.