Length dimension of galvanized seamless steel pipe

Date: 2023-11-06

Length dimension of galvanized seamless steel pipe 1. Indefinite length (usual length) Galvanized seamless steel pipes generally vary in length, which is called indefinite length within the scope of the standard. Indefinite length is also called normal length (through ruler). For example, the length of 159*4.5 galvanized seamless steel pipe is usually 8～12.5 2. Fixed length Cut to a fixed size according to the order requirements is called fixed-length. When delivering according to the fixed-length length, the galvanized seamless steel pipe must have the length specified by the purchaser in the order contract. For example, if the contract states that the delivery is based on a fixed-length length of 6m, the delivered materials must be 6m long. Anything shorter than 6m or longer than 6m is not qualified. But in fact, it is impossible for the delivery to be all 6m long, so it is stipulated that a positive deviation is allowed, but a negative deviation is not allowed. (When the fixed length is less than 6m, the allowable deviation is expanded to +30mm; when the fixed length is greater than 6m, the allowable deviation is expanded to +50mm) 3. Times The fixed size cut into integral multiples according to the order requirements is called double ruler. When delivering in multiple lengths, the length of the galvanized seamless steel pipe delivered must be an integer multiple of the length (called a single length) specified in the order contract by the purchaser (plus saw cut). For example, the buyer requires a single ruler length of 2m in the order contract, then the length is 4m when cut into a double ruler, and 6m when cut into a triple ruler, plus one or two cuts respectively. . The amount of saw cut is specified in the standard. When the double ruler is delivered, only positive deviation is allowed, and negative deviation is not allowed. 4. Short ruler The length is less than the lower limit of the indefinite length specified by the standard, but not less than the allowable shortest length is called short length. For example, the fluid transport steel pipe standard stipulates that 10% (calculated according to the number) of short-length steel pipes with a length of 2-4m are allowed per batch. 4m is the lower limit of indefinite length, and the shortest allowed length is 2m. Post time: Nov-06-2023

Prev : APPLICATIONS OF FORGED CARBON STEEL FITTINGS
Next : Production process of large-diameter straight seam steel pipe
Tags : steel tube supplier , coated carbon pipe , erw pipe

News

Latest news list

How to Choose Stainless Seamless Steel Pipe for High-Temperature Applications

High-temperature piping requires more than simply selecting a stainless steel grade,As temperature increases,material strength,corrosion behavior,thermal expansion,pressure resistance,and long-term stability become increasingly important,For this reason,stainless seamless steel pipe should be selected against the complete service condition rather than temperature alone,
How Stainless Seamless Steel Pipe Is Manufactured: From Billet to Finished Pipe

Stainless seamless steel pipe is used in chemical processing,oil and gas,power generation,water treatment,food processing,and other applications where material performance and pressure integrity matter,But a finished pipe does not become reliable simply because it is made from stainless steel,Its quality is built through material control,forming,heat treatment,dimensional control,inspection,and traceability,Understanding how stainless seamless steel pipe is manufactured gives engineers and technical buyers a better way to evaluate suppliers beyond price,surface appearance,or a product catalogue,
LSAW Steel Pipe Maintenance: Extend Pipeline Service Life

Installing a properly specified LSAW steel pipe does not eliminate the need for pipeline maintenance,Once a pipeline enters service,corrosion,coating deterioration,mechanical loading,ground movement,operating changes,and environmental exposure can gradually affect its condition,For large-diameter pipelines,a practical maintenance program should focus on identifying changes early and taking corrective action before a manageable condition develops into an integrity problem,The objective is not simply to inspect the pipe,It is to understand the condition of the complete pipeline system and respond based on evidence,
How LSAW Steel Pipe Performs in High-Pressure Pipeline Systems

High-pressure pipeline systems place demanding requirements on pipe material,dimensions,weld integrity,inspection,and operating conditions,For large-diameter pipelines,LSAW steel pipe can be an effective solution because its manufacturing process allows large outside diameters and substantial wall thicknesses to be produced from steel plate,However,selecting LSAW steel pipe for pressure service is not simply a matter of choosing a thicker wall,The pipe specification needs to match the actual design pressure,temperature,fluid,diameter,applicable code,and service environment,
How to Prevent LSAW Steel Pipe Corrosion in Water and Buried Pipeline Systems

LSAW steel pipe is widely used for large-diameter water transmission,buried pipelines,and other infrastructure projects where strength,dimensional control,and long-term service reliability are important,However,pipe strength alone does not prevent corrosion,For buried or water pipeline systems,corrosion protection should be considered from material selection and coating through transportation,field welding,installation,and long-term inspection,A coating system should also be selected according to the actual operating environment rather than simply by initial cost,