The difference between fixed length and indefinite length of anticorrosive spiral steel tube

- Apr 20, 2019-

The length of the anticorrosive spiral steel tube used in pipelines should have been used as an indefinite ruler.However, for the convenience of users, for the anticorrosive spiral steel pipe sold at any time, when it is in reserve production, the indefinite length pipe is within the production standards;But in the actual order, the production of standard length of steel pipe.Carbon steel pipe for pipe, carbon steel pipe for pressure pipe, water pipe, etc. is generally 5500 mm, and carbon steel pipe for pipe arc welding is generally 6000 mm.The length of the steel tube used for heat transfer is determined according to the place of use.

The length of the anticorrosive spiral steel tube used in structure is usually fixed.The steel pipe used for mechanical structure, from the use point of view, there are more stringent requirements for the use of deviation.The length of steel pipe column and steel pipe scaffold made of general structural steel pipe shall be specified by the manufacturer.As the pipe material, the steel pipe is produced according to the integral multiple length of the designed length. The allowable deviation of the length is not positive, but only negative and zero. As mentioned above, the steel pipe length is mostly suitable for fixed length, but the anti-corrosion spiral steel pipe for oil Wells USES indefinite length.Although it is indeterminate, it is not completely without limitation, and its length range is divided into three levels. Within the length range of each level, the minimum length and the difference between the minimum length and the maximum length are stipulated.

Product Description
Our products list for steel pipe
Product Name
LSAW Steel Pipe
Used for low pressure liquid delivery, such as water, gas, and oil.
DSAW -Double Submerged arc welded
API 5L, API 5CT, ASTM 53, EN10217, DIN 2458. IS 3589, GB/T3091, GB/T9711
Out Diameter
355.6mm– 1626mm
Wall Thickness
8 -50mm
up to 12m
Steel Grade

GR B, X42, X46, X52, X56, X60, X65, X70, X80
S275, S275JR, S355JRH, S355J2H
Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360- L555
Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement
Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties
(Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
Mill Test Certificate
EN 10204/3.1B

Seamless pipe in bundles
Company Introduction

Cangzhou Steel Pipe Group (CSPG) Co., Ltd. is a large-sized, key metallurgic enterprise of Hebei Province in North China, whose history dates back to 1994. CSPG currently em/paces six member companies with products varying from SSAW, LSAW, ERW, seamless steel pipes to 3PE pipes, galvanized pipes, casing pipes, etc. A Joint-stock corporation, CSPG occupies an area of 600,000 square meters with a total asset of $530 million.

Specialized in the production of straight welded pipe spiral pipe galvanized pipe 3PE/3PP/FBE/TPEP internal and external epoxy powder internal and external epoxy resin cement mortar two cloth three oil buried pipeline IPN8710 non-toxic drinking water internal and external plastic coated lining plastic and other anti-corrosion pipe fittings for oil and gas pipeline water conservancy projects

Executive standard :DIN30670 DIN30678 CSA Z245 AFNOR nf49-710/711 NACE rp0394/0490 AWWAC 210/C213GB/T9711 API 5L ISO 3183Material: Q235B/Q355BGR A GR B x42-x80 l245-l555


Business scope: 21.3mm-3620mmLSAW submerged arc welded pipe 325-2020mmERW straight welded pipe 6mm-711mmSMLS seamless tube 10-1120mmSSAW spiral steel tube 219-3620mmDemand for quality suppliers and partners