API 5MIF 2025 机械干涉配合连接 Mechanical Interference Fit Connection.pdf

API 5MIF 2025 机械干涉配合连接 Mechanical Interference Fit Connection.pdf

1. Mechanical Interference Fit Connection

API STANDARD SMIF
FIRST EDITION, JANUARY 2025

American
Petroleum
Institute

API

2. Special Notes

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‘waranty or representation. er express or Impiea wh espe fo he cura, completeness. or sf ot
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any information or process disclosed in is publication, Nether API nr any of APIs employees, subcontractors,
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‘hace,

3. Foreword

Nothing contained in any AP publication tobe constr as granting any righ by implication or thew, for he
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Contained inte publication be construed as insuring anyone against habit o infingement oles patent

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Shalt As used in standard "shal" denotes minimum requrementto conform 1 he standard

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Gone tthe standar,

May As used in a standard, "may" denotes a cours of action perse wit he itso standard
‘Can: As used na standard "can denote a statement of possi or capabiy,

‘Tis document was produced under API standarszationproceduresthatensure appropriate nication andpartipaton
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‘he API Standard Department, ttphone [phone] À eaaog of AP! publeatone and moto le Pubiehed
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‘Suggested revisions are ined and shouldbe submited to the Standards Department, API, 200 Massachusetts
‘Avenue, NW, Suto 1100, Washington, DC 2000, standards@ap rg

5. 44
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7. Mechanical Interference Fit Connection
1 Scope

“This standard contains intrmaton or the use of mechanical interference ft connection inthe assembly process
‘IAP SL pio, afer production by the pipe manufacturer. Mechanical norforence fi connections, as considered
tin tis standard are o establish common aspects at can hen be used by connection manufactures and
Salon.

‘This standard provides fundamental guidance to educate the end users, connection manvlactures, and supers
by Gent te rial features of the technology. This standart s intended for use by project engners as
they evaluate mechanical interference ft connections pipeline appkcabons and designs ts not tended for
use as an equipment purchasing specication.

‘This standard dons not prevent supereimanufachrers trom cn aerate equpment or engineering
salons 1 usrspurchasrs. Thre can be axonal requremant, beyond the normaton olin in Pia
Standard. that may be needed for space aspicalons tus may be parar applcablo whore thre Is
Inmovalre o developing technology

2. Normativo References

‘The flowing documents ar referred to In the txt In such a way that some or al of ner content constitutes
requremens ofthis document Fr dated references, only te ean tod apples. For undted references, the
laos! ton oo references document (nein any adenda) pie.

API Spoctcaton SL. Line Pipe

3 Terms and Definitions

Forte purposes of ths standard the arms and deis of the ong pol.

34
assembly
‘The ling together ofthe prepared pipe end no a compet suture

32

assembiy
‘The pay performing any connection operation, inching subcontractors.

33
al compression
‘The sess imposed on a body that tends to make become shore

34
{all tension
‘The stress imposed on a body tat ends to make become longer

as
company
Tre peine ownerioperstr

as
connection manufacturer
Senda provider hat modes pio ends

8. a
‘nd preparation

‘The modeaton of ppe ends to accommodate mechanical terorene ft connection.

28

Inspection

‘The process ol measuring, examining, testing gauging, or otherwise comparing the unto product wih the
pica niente.

29

mechanical interference fit connection (MIF)

‘Reonnacion, lso known asa pros to icon that a form of fastening baten wo ght tng mating
pars ra produces à jt thal shld ogeter by Inch after the pars are pushed together

4. Goneralinformation for Mechanical interference Fit Connections andEnd Preparation

41 Applcabilty and Considerations
Mechanical itrerece ft connections may be used in pene systems where appheabie, +

the source pp meets API SL: and

à sample ofthe ont type tbe used has been poof ested under simulated service conditions.

“Te ail tens, axa compressive, and hoop strengths ofthe ont shal be a specie by the designer of the
mechanical nererence assembly sytem and sabe Based upon est daa or expeence aceplaie oe.
company.

“Te connection manufacturer sha provide an inspection and ts plan.

42. Characteristics of the Inspaction and Test Plan

Before producton commences, the manufacturer shal supply the purchaser wih summary information or
identico of te caro! documents a applcable, onthe man characteristics oft inspeción and est lan.
‘his plan shal nce at east he folowing:

2) inspection activity:

b) organzaton or indviuals response for performing the inspection actuty (ncludng maacture,
‘Subcontractor purchaser, or há party presentate],

©) Inspectontes and calbrabon practices, a epica
©) troquency ot inspection

©) accapance ee;

1. actors to norcontomances

9) rest recording, as apical:

h) téerticaion ol processes requiring van: and
1) wines and ld points

NOTE The above ts ene! APH SL

9. ‘These procedures and any thers aged o by the purchaser andthe connection manufacturer determined
necessary o provide a consistent produc fr Ppeine service sha be used the peine st be extemaly
‘coated, the connection manufacturer shall provide any documentation regarding coating apteaton requirement!
tations

43. Qualty and inspection

“The conection mamactuer shal develop union speccatos 1 incite end geparatons ae ascamaıy
processes. The connection manufacturer shal estabsh, mplement and martin a qu management
[jee where actives are controled, Te conection mancher sal be responsible for matanng records
required by this standard

44 End Preparation Qualification and Training
Mechanica intrerene fi end preparation assembly contractor shal be qualified 1 propery prepare pipe ends
for assemby, The degre of vanıng required for assembly convactrs sha be determined by the connection
‘manufacturer and approved by the company.

rang should ce te otowing

a) sat:

te functen and operation of he end preparation equipment

©) the end reparation procedure;

© equipment woubeshootng:

©) ispecion and

connection manufacture tolerances

‘Documented evidence of qualcaton upon satisfactory completion ofthe taining requirements shall be made
_avalabie upon request. The evidence shall show an expiration date and sha bo val for a pero ro exceeding
two yeas

AS End Proparation Inspection Procedures

End preparation inspecton procedures shal be developed by te connection designer of the mechanical
intreranco ft assembly system and approved by the company. Such procedures shoud inde th inspection,
before assamy or mpereciens and cotimental maüng surface condtns of the prepared pipe nds
Manufacturer oerances shal ncludotleances 1 entre proper itertorence 8

48 Assombly Procedures

[Mechanical intererene tt assem contactors sa be quae 1 produce accept, consistent assembles
‘The designer ofthe mechanical ntorterence ft assembly system shall develop dotadas assembly procedure
specticatons that ince the assamby operation roquemnis. Quafcaton of such specications shal be
supported by engineering ts ala and fd was. Te acceptaby of such quakfeatene shoul be determined
bythe company

For mechanical interference connectons that uso mullcomponent ubricalon mars, special atenon
shouldbe gueno proper mang according 1 he lubricar manufacturer's recammendatens. The connection

‘manufacturer and company shoud discuss pipeline operaing temperatures to assure appropriate brcant
‘election.

10. Any restrictions on assembly operations du to weather cotos a specie y assembly contractor shal
0 nidos inte quad assembly precedes,

NOTE Tr sant coi may conse resting bate por) ming macros lr ss
5. Qualification of Assembly Contractors
51. Assomoly Training

“The degre of traning equis fo assembly contaiors shal be determined by the designer fe mechanical
Intereronce tt assembly system and approved bythe company.

Tri shoul include the oo:
a) sat

1) function and operation ofthe assembly equipment

©) preparaton and application of any ant-gaing mates

9) propor ppe-handing techniques:

©) assembly procedure;

1) inclement weather assembly techrigues:

9) equipment woubeshooting

IM} recognton ofan improper connecton or where assembly has exceeded acceptable oerances

carece actons 1 take for acceptable assembly. and

Day to stop workin the evento unsat or unacceptable work product

Evidence o quali shal be issued tothe assembly contractors upon satisfactory comple ofthe training
requirements. The evidence shal show an expiration dao aná shoul be vad fra peed nl excoadng wo.
years

152. inspection Procedures and Training

“Te designer ofthe mechanical Intrernco ft assembly system sha spect e ont mensions, dimensional
tolerances, and interference range win wich the Jot can meets designed perfomance capas. Jont
designers shal prove or recommend metheds lr deterring hat the mechanical Inerernco of ist
connections fale wthn the species range, and they shal incude such methode nthe inspect procedure.
inspection procedures hal be developed by the designer ofthe mechanical ntererenco ft assemby system
‘and approved by the company such procedures aha neue te inpecton proper insertion The mechanical
Intoreronceftdesgner shallot te pipe operator and assembly contactor of any Imitaonsormecicatons
necessary o hydrtesing the semble pain.

Anepacion personnel shat receive training ne flowing topics:

2) principe of teint design;

inspection procedure and applicable nspecion methods; and

11. ©) insertion tolerances dung assembly
6 Material Requirements, Performance

61. Requirements
AP EL grades sal required or mechanical itrerance ft connection appkcatons. When mates (pe) are
‘mised, fey ana be accompare by taceabie matena test reports 0 ta sheets sung Chema anal,
heat boatman! condo, and mechanical properties. Key variables lr qua shall bo agreed batwoon the
company and conection manufacture and hal cover such ements as the pipe mil manufacturing process.

62 Performance
“The designer ofthe mechanical interference ft assembly system shal speci te join mensions, dimensional
tolerances, and merlrenee range atun which the jo can moe designed prlrmance eapabities. Ths
anal so include cod deformaton reins for sou senda mn accordance wih NACE MRO175ISO 15166 ot
as quali by sour service testing

Designar ofthe mechanical interernce ft assemb system sha establish design margins of he connection
‘trough physica testing as greed upon by the company. Testing may ue, u ot kd o, tr folowing

— al tension o dure;
— al compression to fae:

— taigue to fie,

— bending to tae

peine aire con:

— sour service (app)

63 Documentation

634 Documents and data shal be legible and mainisined to domonstateconfomance to species
{eauiements. The documents and daa maybe nthe form of any type of mea, such as hard copy or lactone
he documents and data sal be avale and autabe bythe company Documeriton sha be retained fr
rari of ve years tom th dt fast maniere

632 The supe’ operan manual shat contin he folowing infomation sa minimum:

2) salty precautions

1) sz, ype, and modelo nserton equipment

©) postinseton napoction:

©) instalation, operating, an specofesture operation procedures

©). woubleshooting procedures;

1. repair andr redress imitations and procedures: and

12. 9) any ether documents by contractual agreement.

13. Bibliography

N} API Recommended Practice 54, Oecupatena Safety and Heath fr Où and Gas Wel Dring and Servicing
Operan

[2] API Recommended Pracice C1, Cae and Use of Casing and Ting
[91 API Recarmended Proc SLB, Fils Inspecbon of Mew Lie Pipe
141 API Recommended Pracice SUE, Uirasonie Evaluation of Ppe Inpertectons

IS} API Specicalon 01, Quality Management System Requvements for Manufacturing Organizations fe he
Petroleum and Natura! Gas Industry

161 API Standar STO-HASME FFS-1,FtnessforSensce
IM API Techical Report 503, CakuatngPerormancaProprtes of Pipe Used as Casing or Ting
(BI ASME 8313, Process Ping

[91 ASMEB31.4, Peine Tanspotaton Systems for Luis an Sues

[10] ASME 631.8, Gas Tansmissen and Dsrbuton Png Systems

AH] ASTM A STD, Standard Test Methods and Dodo for Mechanical Testing of Sel Products
[12] ASTI ES Standard Practices fo Fore Vera of Testing Machines

119] ASTM ES, Standard Pract or Vortaton and Cesiicaton of Extonsometr Systems

[14] ASTI E110, Standard Test Method for Rockwell and Brei Horaness of Metalic Materials by Potable
‘Hardness Testers

(15) ASTI E165, Standard Practice for Liquid Penetrant Testing for General industry
[16] NACE MROY7S/SO 15156-1, Petroleum and Natura Gas Indusine—Materil for Use in HS containing

Enironments in Où and Gas Producton—Par 1: General Pincples fr Salecion of Cracking asistan
Moteras

15. American
Petroleum
Institute

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